Publications of Daniel J Gauthier    :chronological  alphabetical  combined listing:

%% Papers Published   
@article{fds329840,
   Author = {Stipčević, M and Christensen, BG and Kwiat, PG and Gauthier,
             DJ},
   Title = {Advanced active quenching circuit for ultra-fast quantum
             cryptography},
   Journal = {Optics express},
   Volume = {25},
   Number = {18},
   Pages = {21861-21861},
   Year = {2017},
   Month = {September},
   url = {http://dx.doi.org/10.1364/OE.25.021861},
   Doi = {10.1364/OE.25.021861},
   Key = {fds329840}
}

@article{fds329841,
   Author = {Shea, ME and Gauthier, DJ},
   Title = {Comment on “Nondestructive light-shift measurements of
             single atoms in optical dipole traps”},
   Journal = {Physical Review A},
   Volume = {96},
   Number = {2},
   Year = {2017},
   Month = {August},
   url = {http://dx.doi.org/10.1103/PhysRevA.96.027401},
   Doi = {10.1103/PhysRevA.96.027401},
   Key = {fds329841}
}

@article{fds325800,
   Author = {Lohmann, J and D'Huys, O and Haynes, ND and Schöll, E and Gauthier,
             DJ},
   Title = {Transient dynamics and their control in time-delay
             autonomous Boolean ring networks.},
   Journal = {Physical review. E},
   Volume = {95},
   Number = {2-1},
   Pages = {022211},
   Year = {2017},
   Month = {February},
   url = {http://dx.doi.org/10.1103/physreve.95.022211},
   Abstract = {Biochemical systems with switch-like interactions, such as
             gene regulatory networks, are well modeled by autonomous
             Boolean networks. Specifically, the topology and logic of
             gene interactions can be described by systems of continuous
             piecewise-linear differential equations, enabling analytical
             predictions of the dynamics of specific networks. However,
             most models do not account for time delays along links
             associated with spatial transport, mRNA transcription, and
             translation. To address this issue, we have developed an
             experimental test bed to realize a time-delay autonomous
             Boolean network with three inhibitory nodes, known as a
             repressilator, and use it to study the dynamics that arise
             as time delays along the links vary. We observe various
             nearly periodic oscillatory transient patterns with
             extremely long lifetime, which emerge in small network
             motifs due to the delay, and which are distinct from the
             eventual asymptotically stable periodic attractors. For
             repeated experiments with a given network, we find that
             stochastic processes give rise to a broad distribution of
             transient times with an exponential tail. In some cases, the
             transients are so long that it is doubtful the attractors
             will ever be approached in a biological system that has a
             finite lifetime. To counteract the long transients, we show
             experimentally that small, occasional perturbations applied
             to the time delays can force the trajectories to rapidly
             approach the attractors.},
   Doi = {10.1103/physreve.95.022211},
   Key = {fds325800}
}

@article{fds324409,
   Author = {Islam, NT and Cahall, C and Aragoneses, A and Lim, CCW and Allman, MS and Verma, V and Nam, SW and Kim, J and Gauthier, DJ},
   Title = {Discrete-variable time-frequency quantum key
             distribution},
   Journal = {2016 Conference on Lasers and Electro-Optics, CLEO
             2016},
   Year = {2016},
   Month = {December},
   ISBN = {9781943580118},
   Abstract = {© 2016 OSA. We demonstrate a setup for realizing a
             four-dimensional time-frequency quantum key distribution
             protocol, where discrete temporal states are secured using
             discrete frequency states. The high-dimensional frequency
             states are detected using a tree of passively stabilized
             time-delay interferometers.},
   Key = {fds324409}
}

@article{fds324410,
   Author = {Cahall, CT and Gauthier, DJ and Kim, J},
   Title = {Cryogenic amplifiers for a superconducting nanowire single
             photon detector system},
   Journal = {2016 Conference on Lasers and Electro-Optics, CLEO
             2016},
   Year = {2016},
   Month = {December},
   ISBN = {9781943580118},
   Abstract = {© 2016 OSA. We study an electrical readout scheme for
             superconducting nanowire single photon detectors using
             commercial off-the-shelf amplifiers operating at cryogenic
             temperatures. Low power consumption and improved noise
             performance enable multichannel readout circuit solution
             with high timing resolution.},
   Key = {fds324410}
}

@article{fds329842,
   Author = {Brougham, T and Wildfeuer, CF and Barnett, SM and Gauthier,
             DJ},
   Title = {The information of high-dimensional time-bin encoded
             photons},
   Journal = {The European Physical Journal D - Atomic, Molecular, Optical
             and Plasma Physics},
   Volume = {70},
   Number = {10},
   Year = {2016},
   Month = {October},
   url = {http://dx.doi.org/10.1140/epjd/e2016-70357-4},
   Doi = {10.1140/epjd/e2016-70357-4},
   Key = {fds329842}
}

@article{fds324411,
   Author = {Schmittberger, BL and Gauthier, DJ},
   Title = {Spontaneous emergence of free-space optical and atomic
             patterns},
   Journal = {New Journal of Physics},
   Volume = {18},
   Number = {10},
   Pages = {103021-103021},
   Year = {2016},
   Month = {October},
   url = {http://dx.doi.org/10.1088/1367-2630/18/10/103021},
   Doi = {10.1088/1367-2630/18/10/103021},
   Key = {fds324411}
}

@article{fds324412,
   Author = {D'Huys, O and Lohmann, J and Haynes, ND and Gauthier,
             DJ},
   Title = {Super-transient scaling in time-delay autonomous Boolean
             network motifs.},
   Journal = {Chaos},
   Volume = {26},
   Number = {9},
   Pages = {094810},
   Year = {2016},
   Month = {September},
   url = {http://dx.doi.org/10.1063/1.4954274},
   Abstract = {Autonomous Boolean networks are commonly used to model the
             dynamics of gene regulatory networks and allow for the
             prediction of stable dynamical attractors. However, most
             models do not account for time delays along the network
             links and noise, which are crucial features of real
             biological systems. Concentrating on two paradigmatic
             motifs, the toggle switch and the repressilator, we develop
             an experimental testbed that explicitly includes both
             inter-node time delays and noise using digital logic
             elements on field-programmable gate arrays. We observe
             transients that last millions to billions of characteristic
             time scales and scale exponentially with the amount of time
             delays between nodes, a phenomenon known as super-transient
             scaling. We develop a hybrid model that includes time delays
             along network links and allows for stochastic variation in
             the delays. Using this model, we explain the observed
             super-transient scaling of both motifs and recreate the
             experimentally measured transient distributions.},
   Doi = {10.1063/1.4954274},
   Key = {fds324412}
}

@article{fds324413,
   Author = {Schmittberger, BL and Gauthier, DJ},
   Title = {Transverse optical and atomic pattern formation},
   Journal = {Journal of the Optical Society of America
             B},
   Volume = {33},
   Number = {7},
   Pages = {1543-1543},
   Year = {2016},
   Month = {July},
   url = {http://dx.doi.org/10.1364/JOSAB.33.001543},
   Doi = {10.1364/JOSAB.33.001543},
   Key = {fds324413}
}

@article{fds329843,
   Author = {Stipcevic, M and Christensen, BG and Kwiat, PG and Gauthier,
             DJ},
   Title = {Advanced active quenching circuits for single-photon
             avalanche photodiodes},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {9858},
   Year = {2016},
   Month = {January},
   ISBN = {9781510600997},
   url = {http://dx.doi.org/10.1117/12.2227999},
   Abstract = {© 2016 SPIE. Commercial photon-counting modules, often
             based on actively quenched solid-state avalanche photodiode
             sensors, are used in wide variety of applications.
             Manufacturers characterize their detectors by specifying a
             small set of parameters, such as detection efficiency, dead
             time, dark counts rate, afterpulsing probability and single
             photon arrival time resolution (jitter), however they
             usually do not specify the conditions under which these
             parameters are constant or present a sufficient description.
             In this work, we present an in-depth analysis of the active
             quenching process and identify intrinsic limitations and
             engineering challenges. Based on that, we investigate the
             range of validity of the typical parameters used by two
             commercial detectors. We identify an additional set of
             imperfections that must be specified in order to
             sufficiently characterize the behavior of single-photon
             counting detectors in realistic applications. The additional
             imperfections include rate-dependence of the dead time,
             jitter, detection delay shift, and «twilighting.» Also,
             the temporal distribution of afterpulsing and various
             artifacts of the electronics are important. We find that
             these additional non-ideal behaviors can lead to unexpected
             effects or strong deterioration of the system's performance.
             Specifically, we discuss implications of these new findings
             in a few applications in which single-photon detectors play
             a major role: the security of a quantum cryptographic
             protocol, the quality of single-photon-based random number
             generators and a few other applications. Finally, we
             describe an example of an optimized avalanche quenching
             circuit for a high-rate quantum key distribution system
             based on time-bin entangled photons.},
   Doi = {10.1117/12.2227999},
   Key = {fds329843}
}

@article{fds324414,
   Author = {Islam, NT and Cahall, C and Aragoneses, A and Lim, CCW and Allman, MS and Verma, V and Nam, SW and Kim, J and Gauthier, DJ},
   Title = {Enhancing the secure key rate in a quantum-key-distribution
             system using discrete-variable, high-dimensional,
             time-frequency states},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {9996},
   Year = {2016},
   Month = {January},
   ISBN = {9781510603967},
   url = {http://dx.doi.org/10.1117/12.2241429},
   Abstract = {© 2016 SPIE. High-dimensional (dimension d > 2) quantum key
             distribution (QKD) protocols that encode information in the
             temporal degree of freedom promise to overcome some of the
             challenges of qubit-based (d = 2) QKD systems. In
             particular, the long recovery time of single-photon
             detectors and large channel noise at long distance both
             limit the rate at which a final secure key can be generated
             in a low-dimension QKD system. We propose and demonstrate a
             practical discrete-variable time-frequency protocol with d =
             4 at a wavelength of 1550 nm, where the temporal states are
             secured by transmitting and detecting their dual states
             under Fourier transformation, known as the frequency-basis
             states, augmented by a decoy-state protocol. We show that
             the discrete temporal and frequency states can be generated
             and detected using commercially-available equipment with
             high timing and spectral efficiency. In our initial
             experiments, we only have access to detectors that have low
             efficiency (1%) at 1550 nm. Together with other component
             losses, our system is equivalent to a QKD system with ideal
             components and a 50-km-long optical-fiber quantum channel.
             We find that our system maintains a spectral visibility of
             over 99.0% with a quantum bit error rate of 2.3%, which is
             largely due to the finite extinction ratio of the intensity
             modulators used in the transmitter. The estimated secure key
             rate of this system is 7.7×10 4 KHz, which should improve
             drastically when we use detectors optimized for 1550
             nm.},
   Doi = {10.1117/12.2241429},
   Key = {fds324414}
}

@article{fds246204,
   Author = {Guilbert, HE and Wong, Y-P and Gauthier, DJ},
   Title = {Observation of elliptical rings in type-I spontaneous
             parametric downconversion},
   Journal = {Journal of the Optical Society of America
             B},
   Volume = {32},
   Number = {10},
   Pages = {2096-2096},
   Year = {2015},
   Month = {October},
   ISSN = {0740-3224},
   url = {http://dx.doi.org/10.1364/JOSAB.32.002096},
   Doi = {10.1364/JOSAB.32.002096},
   Key = {fds246204}
}

@article{fds322481,
   Author = {Guilbert, HE and Gauthier, DJ},
   Title = {Correction to “Enhancing Heralding Efficiency and
             Biphoton Rate in Type-I Spontaneous Parametric
             Down-Conversion” [May 15 6400610]},
   Journal = {IEEE Journal of Selected Topics in Quantum
             Electronics},
   Volume = {21},
   Number = {5},
   Pages = {1-1},
   Year = {2015},
   Month = {September},
   url = {http://dx.doi.org/10.1109/JSTQE.2015.2450366},
   Doi = {10.1109/JSTQE.2015.2450366},
   Key = {fds322481}
}

@article{fds322482,
   Author = {Baron, A and Larouche, S and Gauthier, DJ and Smith,
             DR},
   Title = {Scaling of the nonlinear response of metal/dielectric
             plasmonic waveguides},
   Journal = {Conference on Lasers and Electro-Optics Europe - Technical
             Digest},
   Volume = {2015-August},
   Year = {2015},
   Month = {August},
   ISBN = {9781557529688},
   Abstract = {© 2015 OSA. The scaling of the nonlinear response of a
             single-interface plasmonic waveguide is studied, where both
             the metal and dielectric display nonlinearity. We introduce
             a figure-of-merit that guides metal/dielectric nanophotonic
             device design for specific applications.},
   Key = {fds322482}
}

@article{fds246207,
   Author = {Rivera-Durón, RR and Campos-Cantón, E and Campos-Cantón, I and Gauthier, DJ},
   Title = {Forced synchronization of autonomous dynamical Boolean
             networks.},
   Journal = {Chaos},
   Volume = {25},
   Number = {8},
   Pages = {083113},
   Year = {2015},
   Month = {August},
   ISSN = {1054-1500},
   url = {http://dx.doi.org/10.1063/1.4928739},
   Abstract = {We present the design of an autonomous time-delay Boolean
             network realized with readily available electronic
             components. Through simulations and experiments that account
             for the detailed nonlinear response of each circuit element,
             we demonstrate that a network with five Boolean nodes
             displays complex behavior. Furthermore, we show that the
             dynamics of two identical networks display
             near-instantaneous synchronization to a periodic state when
             forced by a common periodic Boolean signal. A theoretical
             analysis of the network reveals the conditions under which
             complex behavior is expected in an individual network and
             the occurrence of synchronization in the forced networks.
             This research will enable future experiments on autonomous
             time-delay networks using readily available electronic
             components with dynamics on a slow enough time-scale so that
             inexpensive data collection systems can faithfully record
             the dynamics.},
   Doi = {10.1063/1.4928739},
   Key = {fds246207}
}

@article{fds246227,
   Author = {Guilbert, HE and Gauthier, DJ},
   Title = {Enhancing Heralding Efficiency and Biphoton Rate in Type-I
             Spontaneous Parametric Down-Conversion},
   Journal = {IEEE Journal of Selected Topics in Quantum
             Electronics},
   Volume = {21},
   Number = {3},
   Pages = {215-224},
   Year = {2015},
   Month = {May},
   ISSN = {1077-260X},
   url = {http://dx.doi.org/10.1109/JSTQE.2014.2375161},
   Doi = {10.1109/JSTQE.2014.2375161},
   Key = {fds246227}
}

@article{fds303662,
   Author = {Gauthier, DJ and Rosin, DP and Rontani, D and Schöll,
             E},
   Title = {Experimental signatures of chimera states in non-locally
             coupled Boolean phase oscillators},
   Year = {2015},
   Month = {March},
   Key = {fds303662}
}

@article{fds303663,
   Author = {Gauthier, DJ and Haynes, ND and Rosin, DP and Rontani,
             D},
   Title = {Towards reservoir computing with time-delay autonomous
             Boolean networks},
   Year = {2015},
   Month = {March},
   Key = {fds303663}
}

@article{fds246210,
   Author = {Mirhosseini, M and Magaña-Loaiza, OS and O’Sullivan, MN and Rodenburg, B and Malik, M and Lavery, MPJ and Padgett, MJ and Gauthier,
             DJ and Boyd, RW},
   Title = {High-dimensional quantum cryptography with twisted
             light},
   Journal = {New Journal of Physics},
   Volume = {17},
   Number = {3},
   Pages = {033033-033033},
   Year = {2015},
   Month = {March},
   url = {http://dx.doi.org/10.1088/1367-2630/17/3/033033},
   Doi = {10.1088/1367-2630/17/3/033033},
   Key = {fds246210}
}

@article{fds246223,
   Author = {Gauthier, DJ and Schmittberger, BL},
   Title = {Enhancing the nonlinearity at ultra-low light levels using
             spatial bunching of cold atoms},
   Year = {2015},
   Month = {February},
   Key = {fds246223}
}

@article{fds246212,
   Author = {Haynes, ND and Soriano, MC and Rosin, DP and Fischer, I and Gauthier,
             DJ},
   Title = {Reservoir computing with a single time-delay autonomous
             Boolean node},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {91},
   Number = {2},
   Pages = {020801},
   Year = {2015},
   Month = {February},
   ISSN = {1539-3755},
   url = {http://dx.doi.org/10.1103/PhysRevE.91.020801},
   Abstract = {We demonstrate reservoir computing with a physical system
             using a single autonomous Boolean logic element with
             time-delay feedback. The system generates a chaotic
             transient with a window of consistency lasting between 30
             and 300 ns, which we show is sufficient for reservoir
             computing. We then characterize the dependence of
             computational performance on system parameters to find the
             best operating point of the reservoir. When the best
             parameters are chosen, the reservoir is able to classify
             short input patterns with performance that decreases over
             time. In particular, we show that four distinct input
             patterns can be classified for 70 ns, even though the inputs
             are only provided to the reservoir for 7.5
             ns.},
   Doi = {10.1103/PhysRevE.91.020801},
   Key = {fds246212}
}

@article{fds246220,
   Author = {Gauthier, DJ and Lohmann, J and Haynes, ND and D'Huys, O and Schöll,
             E},
   Title = {Dynamics of experimental time-delay autonomous Boolean
             networks},
   Year = {2015},
   Month = {January},
   Key = {fds246220}
}

@article{fds246221,
   Author = {Gauthier, DJ and Haynes, ND and Soriano, MC and Rosin, DP and Fischer,
             I},
   Title = {Physical reservoir computing with Boolean
             logic},
   Year = {2015},
   Month = {January},
   Key = {fds246221}
}

@article{fds246222,
   Author = {Gauthier, DJ and Haynes, ND and Lohmann, J and D'Huys, O and Rosin,
             DP},
   Title = {Extreme transients in time-delay autonomous Boolean
             networks},
   Year = {2015},
   Month = {January},
   Key = {fds246222}
}

@article{fds246208,
   Author = {Baron, A and Larouche, S and Gauthier, DJ and Smith,
             DR},
   Title = {Scaling of the nonlinear response of metal/dielectric
             plasmonic waveguides},
   Journal = {CLEO: QELS - Fundamental Science, CLEO_QELS
             2015},
   Pages = {1551p},
   Year = {2015},
   Month = {January},
   ISBN = {9781557529688},
   url = {http://dx.doi.org/10.1364/CLEO_QELS.2015.FM3E.7},
   Abstract = {The scaling of the nonlinear response of a single-interface
             plasmonic waveguide is studied, where both the metal and
             dielectric display nonlinearity. We introduce a
             figure-of-merit that guides metal/dielectric nanophotonic
             device design for specific applications. © OSA
             2015.},
   Doi = {10.1364/CLEO_QELS.2015.FM3E.7},
   Key = {fds246208}
}

@article{fds246211,
   Author = {Baron, A and Larouche, S and Gauthier, DJ and Smith,
             DR},
   Title = {Scaling of the nonlinear response of the surface plasmon
             polariton at a metal/dielectric interface},
   Journal = {Journal of the Optical Society of America
             B},
   Volume = {32},
   Number = {1},
   Pages = {9-9},
   Year = {2015},
   Month = {January},
   ISSN = {0740-3224},
   url = {http://dx.doi.org/10.1364/JOSAB.32.000009},
   Doi = {10.1364/JOSAB.32.000009},
   Key = {fds246211}
}

@article{fds246224,
   Author = {Weicker, L and Erneux, T and Rosin, DP and Gauthier,
             DJ},
   Title = {Multirhythmicity in an optoelectronic oscillator with large
             delay},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {91},
   Number = {1},
   Pages = {012910},
   Year = {2015},
   Month = {January},
   ISSN = {1539-3755},
   url = {http://dx.doi.org/10.1103/PhysRevE.91.012910},
   Abstract = {An optoelectronic oscillator exhibiting a large delay in its
             feedback loop is studied both experimentally and
             theoretically. We show that multiple square-wave
             oscillations may coexist for the same values of the
             parameters (multirhythmicity). Depending on the sign of the
             phase shift, these regimes admit either periods close to an
             integer fraction of the delay or periods close to an odd
             integer fraction of twice the delay. These periodic
             solutions emerge from successive Hopf bifurcation points and
             stabilize at a finite amplitude following a scenario similar
             to Eckhaus instability in spatially extended systems. We
             find quantitative agreements between experiments and
             numerical simulations. The linear stability of the square
             waves is substantiated analytically by determining the
             stable fixed points of a map.},
   Doi = {10.1103/PhysRevE.91.012910},
   Key = {fds246224}
}

@article{fds321996,
   Author = {Baron, A and Hoang, TB and Fang, C and Larouche, S and Gauthier, DJ and Mikkelsen, MH and Smith, DR},
   Title = {Nonlinear Metal/Dielectric Plasmonic Interfaces},
   Journal = {Nonlinear Optics, NLO 2015},
   Year = {2015},
   Month = {January},
   ISBN = {9781557520012},
   url = {http://dx.doi.org/10.1364/NLO.2015.NTu2B.2},
   Abstract = {© 2015 OSA. We investigate theoretically and experimentally
             the optical nonlinearity of metal/dielectric interfaces,
             which provides a metric that predicts the scaling of
             self-action as well as a means to measure χ (3) of gold
             using surface plasmon polaritons.},
   Doi = {10.1364/NLO.2015.NTu2B.2},
   Key = {fds321996}
}

@article{fds246226,
   Author = {Mirhosseini, M and Magana-Loaiza, OS and O'Sullivan, MN and Rodenburg, B and Malik, M and Lavery, MPJ and Padgett, MJ and Gauthier,
             DJ and Boyd, RW},
   Title = {High-dimensional quantum key distribution with photonic
             orbital angular momentum},
   Journal = {Frontiers in Optics, FiO 2014},
   Year = {2014},
   Month = {October},
   ISBN = {1557522863},
   Abstract = {© 2014 Optical Society of America. We experimentally
             demonstrate a quantum cryptography system based on photonic
             orbital angular momentum. The system achieves a channel
             capacity of 2.1 bits per sifted photon through the use of a
             7-dimensional alphabet for encoding information.},
   Key = {fds246226}
}

@article{fds246228,
   Author = {Rosin, DP and Rontani, D and Haynes, ND and Schöll, E and Gauthier,
             DJ},
   Title = {Transient scaling and resurgence of chimera states in
             networks of Boolean phase oscillators.},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {90},
   Number = {3},
   Pages = {030902},
   Year = {2014},
   Month = {September},
   ISSN = {1539-3755},
   url = {http://hdl.handle.net/10161/9271 Duke open
             access},
   Abstract = {We study networks of nonlocally coupled electronic
             oscillators that can be described approximately by a
             Kuramoto-like model. The experimental networks show long
             complex transients from random initial conditions on the
             route to network synchronization. The transients display
             complex behaviors, including resurgence of chimera states,
             which are network dynamics where order and disorder
             coexists. The spatial domain of the chimera state moves
             around the network and alternates with desynchronized
             dynamics. The fast time scale of our oscillators (on the
             order of 100ns) allows us to study the scaling of the
             transient time of large networks of more than a hundred
             nodes, which has not yet been confirmed previously in an
             experiment and could potentially be important in many
             natural networks. We find that the average transient time
             increases exponentially with the network size and can be
             modeled as a Poisson process in experiment and simulation.
             This exponential scaling is a result of a synchronization
             rate that follows a power law of the phase-space
             volume.},
   Doi = {10.1103/physreve.90.030902},
   Key = {fds246228}
}

@article{fds246219,
   Author = {Gauthier, DJ and Haynes, N and Rontani, D and Rosin,
             DP},
   Title = {Autonomous Boolean networks for experimental network science
             and chimera states},
   Year = {2014},
   Month = {August},
   Key = {fds246219}
}

@article{fds325801,
   Author = {Mirhosseini, M and Magaña-Loaiza, OS and O'Sullivan, MN and Rodenburg, B and Shi, Z and Malik, M and Lavery, MPJ and Padgett, MJ and Gauthier, DJ and Boyd, RW and Mirhosseini, M and Magaña-Loaiza, OS and O'Sullivan, MN and Rodenburg, B and Shi, Z and Malik, M and Lavery, MPJ and Padgett, MJ and Gauthier, DJ and Boyd, RW},
   Title = {Quantum information with structured lightQuantum information
             with structured light},
   Journal = {Optics InfoBase Conference Papers},
   Volume = {Part F39-LS 2016},
   Year = {2014},
   Month = {July},
   ISBN = {9781943580194},
   url = {http://dx.doi.org/10.1364/LS.2016.LTu1E.3},
   Abstract = {© OSA 2016. We investigate structured photons as carriers
             of quantum information. We describe our implementation of
             quantum cryptography with orbital angular momentum, and
             present our results on efficient implementation of quantum
             state tomography for structured light fields.},
   Doi = {10.1364/LS.2016.LTu1E.3},
   Key = {fds325801}
}

@article{fds246218,
   Author = {Gauthier, DJ and Schmittberger, BL},
   Title = {Superradiance in Driven Ultra-Cold Atoms},
   Year = {2014},
   Month = {July},
   Key = {fds246218}
}

@article{fds246229,
   Author = {Schmittberger, BL and Gauthier, DJ},
   Title = {Enhancing light-atom interactions via atomic
             bunching},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {90},
   Number = {1},
   Year = {2014},
   Month = {July},
   ISSN = {1050-2947},
   url = {http://hdl.handle.net/10161/9272 Duke open
             access},
   Doi = {10.1103/PhysRevA.90.013813},
   Key = {fds246229}
}

@article{fds246217,
   Author = {Gauthier, DJ and Rosin, DP and Rontani, D and Haynes,
             ND},
   Title = {Dynamics and control of time-delay Boolean
             networks},
   Year = {2014},
   Month = {June},
   Key = {fds246217}
}

@article{fds246216,
   Author = {Gauthier, DJ and Rosin, DP and Soriano, MC and Fischer, I and Haynes,
             ND},
   Title = {Reservoir computing with a single autonomous Boolean node
             using time-delay feedback},
   Year = {2014},
   Month = {June},
   Key = {fds246216}
}

@article{fds246215,
   Author = {Gauthier, DJ and Schmittberger, BL},
   Title = {Optical Pattern Formation in Spatially Bunched Atoms: A
             Self-Consistent Model and Experiment},
   Year = {2014},
   Month = {June},
   url = {http://meetings.aps.org/Meeting/DAMOP14/Session/N6.1},
   Key = {fds246215}
}

@article{fds246232,
   Author = {Zhu, Y and Greenberg, JA and Husein, NA and Gauthier,
             DJ},
   Title = {Giant all-optical tunable group velocity dispersion in an
             optical fiber.},
   Journal = {Optics express},
   Volume = {22},
   Number = {12},
   Pages = {14382-14391},
   Year = {2014},
   Month = {June},
   url = {http://dx.doi.org/10.1364/oe.22.014382},
   Abstract = {We realize a strongly dispersive material with large tunable
             group velocity dispersion (GVD) in a commercially-available
             photonic crystal fiber. Specifically, we pump the fiber with
             a two-frequency pump field that induces an absorbing
             resonance adjacent to an amplifying resonance via the
             stimulated Brillouin processes. We demonstrate all-optical
             control of the GVD by measuring the linear frequency chirp
             impressed on a 28-nanosecond-duration optical pulse by the
             medium and find that it is tunable over the range ± 7.8
             ns(2)/m. The maximum observed value of the GVD is 10(9)
             times larger than that in a typical single-mode silica
             optical fiber. Our observations are in good agreement with a
             theoretical model of the process.},
   Doi = {10.1364/oe.22.014382},
   Key = {fds246232}
}

@article{fds246236,
   Author = {Lin, Y and Ramirez-Giraldo, JC and Gauthier, DJ and Stierstorfer, K and Samei, E},
   Title = {An angle-dependent estimation of CT x-ray spectrum from
             rotational transmission measurements.},
   Journal = {Medical physics},
   Volume = {41},
   Number = {6},
   Pages = {062104},
   Year = {2014},
   Month = {June},
   ISSN = {0094-2405},
   url = {http://dx.doi.org/10.1118/1.4876380},
   Abstract = {Computed tomography (CT) performance as well as dose and
             image quality is directly affected by the x-ray spectrum.
             However, the current assessment approaches of the CT x-ray
             spectrum require costly measurement equipment and
             complicated operational procedures, and are often limited to
             the spectrum corresponding to the center of rotation. In
             order to address these limitations, the authors propose an
             angle-dependent estimation technique, where the incident
             spectra across a wide range of angular trajectories can be
             estimated accurately with only a single phantom and a single
             axial scan in the absence of the knowledge of the bowtie
             filter.The proposed technique uses a uniform cylindrical
             phantom, made of ultra-high-molecular-weight polyethylene
             and positioned in an off-centered geometry. The projection
             data acquired with an axial scan have a twofold purpose.
             First, they serve as a reflection of the transmission
             measurements across different angular trajectories. Second,
             they are used to reconstruct the cross sectional image of
             the phantom, which is then utilized to compute the
             intersection length of each transmission measurement. With
             each CT detector element recording a range of transmission
             measurements for a single angular trajectory, the spectrum
             is estimated for that trajectory. A data conditioning
             procedure is used to combine information from hundreds of
             collected transmission measurements to accelerate the
             estimation speed, to reduce noise, and to improve estimation
             stability. The proposed spectral estimation technique was
             validated experimentally using a clinical scanner (Somatom
             Definition Flash, Siemens Healthcare, Germany) with spectra
             provided by the manufacturer serving as the comparison
             standard. Results obtained with the proposed technique were
             compared against those obtained from a second conventional
             transmission measurement technique with two materials (i.e.,
             Cu and Al). After validation, the proposed technique was
             applied to measure spectra from the clinical system across a
             range of angular trajectories [-15°, 15°] and spectrum
             settings (80, 100, 120, 140 kVp).At 140 kVp, the proposed
             technique was comparable to the conventional technique in
             terms of the mean energy difference (MED, -0.29 keV) and the
             normalized root mean square difference (NRMSD, 0.84%) from
             the comparison standard compared to 0.64 keV and 1.56%,
             respectively, with the conventional technique. The average
             absolute MEDs and NRMSDs across kVp settings and angular
             trajectories were less than 0.61 keV and 3.41%,
             respectively, which indicates a high level of estimation
             accuracy and stability.An angle-dependent estimation
             technique of CT x-ray spectra from rotational transmission
             measurements was proposed. Compared with the conventional
             technique, the proposed method simplifies the measurement
             procedures and enables incident spectral estimation for a
             wide range of angular trajectories. The proposed technique
             is suitable for rigorous research objectives as well as
             routine clinical quality control procedures.},
   Doi = {10.1118/1.4876380},
   Key = {fds246236}
}

@article{fds246214,
   Author = {Gauthier, DJ},
   Title = {Steady-state, cavity-less, multimode superradiance},
   Year = {2014},
   Month = {May},
   Key = {fds246214}
}

@article{fds246240,
   Author = {Rosin, DP and Rontani, D and Gauthier, DJ},
   Title = {Synchronization of coupled Boolean phase
             oscillators.},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {89},
   Number = {4},
   Pages = {042907},
   Year = {2014},
   Month = {April},
   ISSN = {1539-3755},
   url = {http://dx.doi.org/10.1103/physreve.89.042907},
   Abstract = {We design, characterize, and couple Boolean phase
             oscillators that include state-dependent feedback delay. The
             state-dependent delay allows us to realize an adjustable
             coupling strength, even though only Boolean signals are
             exchanged. Specifically, increasing the coupling strength
             via the range of state-dependent delay leads to larger
             locking ranges in uni- and bidirectional coupling of
             oscillators in both experiment and numerical simulation with
             a piecewise switching model. In the unidirectional coupling
             scheme, we unveil asymmetric triangular-shaped locking
             regions (Arnold tongues) that appear at multiples of the
             natural frequency of the oscillators. This extends
             observations of a single locking region reported in previous
             studies. In the bidirectional coupling scheme, we map out a
             symmetric locking region in the parameter space of frequency
             detuning and coupling strength. Because of the large
             scalability of our setup, our observations constitute a
             first step towards realizing large-scale networks of coupled
             oscillators to address fundamental questions on the
             dynamical properties of networks in a new experimental
             setting.},
   Doi = {10.1103/physreve.89.042907},
   Key = {fds246240}
}

@article{fds246273,
   Author = {Aragoneses, A and Sorrentino, T and Perrone, S and Gauthier, DJ and Torrent, MC and Masoller, C},
   Title = {Experimental and numerical study of the symbolic dynamics of
             a modulated external-cavity semiconductor
             laser.},
   Journal = {Optics express},
   Volume = {22},
   Number = {4},
   Pages = {4705-4713},
   Year = {2014},
   Month = {February},
   url = {http://dx.doi.org/10.1364/oe.22.004705},
   Abstract = {We study the symbolic dynamics of a stochastic excitable
             optical system with periodic forcing. Specifically, we
             consider a directly modulated semiconductor laser with
             optical feedback in the low frequency fluctuations (LFF)
             regime. We use a method of symbolic time-series analysis
             that allows us to uncover serial correlations in the
             sequence of intensity dropouts. By transforming the sequence
             of inter-dropout intervals into a sequence of symbolic
             patterns and analyzing the statistics of the patterns, we
             unveil correlations among several consecutive dropouts and
             we identify clear changes in the dynamics as the modulation
             amplitude increases. To confirm the robustness of the
             observations, the experiments were performed using two
             lasers under different feedback conditions. Simulations of
             the Lang-Kobayashi (LK) model, including spontaneous
             emission noise, are found to be in good agreement with the
             observations, providing an interpretation of the
             correlations present in the dropout sequence as due to the
             interplay of the underlying attractor topology, the external
             forcing, and the noise that sustains the dropout
             events.},
   Doi = {10.1364/oe.22.004705},
   Key = {fds246273}
}

@article{fds246213,
   Author = {Gauthier, DJ and Schmittberger, BL},
   Title = {Observation of ultra-low-light-level self-organized pattern
             formation in driven cold atoms,},
   Year = {2014},
   Month = {January},
   url = {http://www.pqeconference.com/pqe2014/abstractd/61p.pdf},
   Key = {fds246213}
}

@article{fds246231,
   Author = {Sorrentino, T and Aragoneses, A and Perrone, S and Gauthier, DJ and Torrent, MC and Masoller, C},
   Title = {Experimental study of the complex dynamics of semiconductor
             lasers with feedback via symbolic time-series
             analysis},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {9134},
   Year = {2014},
   Month = {January},
   ISSN = {0277-786X},
   url = {http://dx.doi.org/10.1117/12.2052322},
   Abstract = {We investigate the symbolic dynamics of an excitable optical
             system under periodic forcing. Particularly, we consider the
             low-frequency fluctuation (LFF) dynamics of a semiconductor
             laser with periodically-modulated injection current and
             optical feedback. We use a method of symbolic time-series
             analysis that allows us to unveil serial correlations in the
             sequence of intensity dropouts. By transforming the sequence
             of inter-dropout intervals into a sequence of ordinal
             patterns and analyzing the statistics of the patterns, we
             uncover correlations among several consecutive dropouts and
             we identify definite changes in the dynamics as the
             modulation amplitude increases. We confirm the robustness of
             the observations by conducting the experiments with two
             different lasers under different feedback conditions. The
             results are also shown to be robust to variations of the
             threshold used for detecting the dropouts. Simulations of
             the Lang-Kobayashi (LK) model, including spontaneous
             emission noise, are found to be in good qualitative
             agreement with the observations, providing an interpretation
             of the correlations present in the dropout sequence as due
             to the interplay of the underlying attractor topology, the
             periodic forcing, and the noise that sustains the dropout
             events. © 2014 SPIE.},
   Doi = {10.1117/12.2052322},
   Key = {fds246231}
}

@article{fds246239,
   Author = {Christensen, BG and McCusker, KT and Gauthier, DJ and Kumor, DR and Chandar, V and Kwiat, PG},
   Title = {Higher-dimensional quantum cryptography},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2014},
   Month = {January},
   Abstract = {We report on a high-speed quantum cryptography system with
             simultaneous entanglement in polarization and "time-bins".
             We use multiple degrees of freedom and multiple spots on the
             downconversion cone to achieve 14 Mbits/s of secure key.©
             OSA 2014.},
   Key = {fds246239}
}

@article{fds318444,
   Author = {Gauthier, DJ and Wildfeuer, CF and Guilbert, H and Stipčević, M and Christensen, B and Kumor, D and Kwiat, P and McCusker, K and Brougham,
             T and Barnett, SM},
   Title = {Quantum key distribution using hyperentangled time-bin
             states},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2013},
   Month = {December},
   Abstract = {We describe our progress on achieving quantum key
             distribution with high photon efficiency and high rate using
             hyperentanglement. Methods of securing time-bin states and
             classical error correction appropriate for our
             high-dimension protocols will be discussed. © OSA
             2013.},
   Key = {fds318444}
}

@article{fds246235,
   Author = {Christensen, B and Kumor, D and McCusker, K and Chandar, V and Gauthier,
             D and Kwiat, P},
   Title = {Information reconciliation in higher-dimensional quantum
             cryptography},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2013},
   Month = {December},
   ISSN = {2162-2701},
   Abstract = {We report on a high-speed quantum cryptography system that
             utilizes simultaneous entanglement in polarization and
             time-bins. We also show a practical implementation of
             information reconciliation using concatenated low density
             parity check codes. © 2013 Optical Society of
             America.},
   Key = {fds246235}
}

@article{fds246263,
   Author = {Schmittberger, BL and Greenberg, JA and Gauthier,
             DJ},
   Title = {Ultra-low-threshold optical pattern formation in a cold
             atomic vapor},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2013},
   Month = {December},
   Key = {fds246263}
}

@article{fds246265,
   Author = {Gauthier, DJ and Schmittberger, BL and Greenberg,
             JA},
   Title = {Transverse optical patterns for low-light-level optical
             switching},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2013},
   Month = {December},
   Abstract = {We demonstrate that Sisyphus cooling of atoms leads to a new
             source of nonlinear optical interaction that drastically
             increases the interaction strength. This increased coupling
             leads to low-threshold pattern formation, with applications
             in single-photon switching. © OSA 2013.},
   Key = {fds246265}
}

@article{fds220521,
   Author = {H. L. D. de S. Cavalcante and M. Oriá and D. Sornette and E. Ott and and
             D. J. Gauthier},
   Title = {Precidtability and suppression of extreme events in a
             chaotic system},
   Journal = {Phys. Rev. Lett.},
   Volume = {111},
   Pages = {198701},
   Year = {2013},
   Month = {November},
   url = {http://www.phy.duke.edu/~qelectron/pubs/PRL111_198701_2013.pdf},
   Key = {fds220521}
}

@article{fds246282,
   Author = {Cavalcante, HLDDS and Oria, M and Sornette, D and Ott, E and Gauthier,
             DJ},
   Title = {Predictability and Suppression of Extreme Events in a
             Chaotic System},
   Journal = {Physical Review Letters},
   Volume = {111},
   Number = {19},
   Year = {2013},
   Month = {November},
   ISSN = {0031-9007},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000326531300013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Doi = {10.1103/PhysRevLett.111.198701},
   Key = {fds246282}
}

@article{fds246281,
   Author = {Cohen, SD and Aragoneses, A and Rontani, D and Torrent, MC and Masoller,
             C and Gauthier, DJ},
   Title = {Multidimensional subwavelength position sensing using a
             semiconductor laser with optical feedback},
   Journal = {Optics Letters},
   Volume = {38},
   Number = {21},
   Pages = {4331-4334},
   Year = {2013},
   Month = {November},
   ISSN = {0146-9592},
   url = {http://www.phy.duke.edu/~qelectron/pubs/OptLett38_4331_2013.pdf},
   Abstract = {We demonstrate experimentally how to harness quasi-periodic
             dynamics in a semiconductor laser with dual optical feedback
             for measuring subwavelength changes in each arm of the
             cavity simultaneously. We exploit the multifrequency
             spectrum of quasi-periodic dynamics and show that
             independent frequency shifts are mapped uniquely to
             two-dimensional displacements of the arms in the external
             cavity. Considering a laser diode operating at
             telecommunication wavelength ł ≈ 1550 nm, we achieve an
             average nanoscale resolution of approximately 9.8 nm
             (∼λ/160). © 2013 Optical Society of America.},
   Doi = {10.1364/OL.38.004331},
   Key = {fds246281}
}

@article{fds220520,
   Author = {H. Zheng and D.J. Gauthier and H.U. Baranger},
   Title = {Waveguide-QED-Based Photonic Quantum Computation},
   Journal = {Phys. Rev. Lett.},
   Volume = {111},
   Pages = {090502},
   Year = {2013},
   Month = {August},
   url = {http://www.phy.duke.edu/~qelectron/pubs/PRL111_090502_2013.pdf},
   Key = {fds220520}
}

@article{fds246287,
   Author = {Rosin, DP and Rontani, D and Gauthier, DJ and Schöll,
             E},
   Title = {Experiments on autonomous Boolean networks.},
   Journal = {Chaos},
   Volume = {23},
   Number = {2},
   Pages = {025102},
   Year = {2013},
   Month = {June},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/23822500},
   Abstract = {We realize autonomous Boolean networks by using logic gates
             in their autonomous mode of operation on a
             field-programmable gate array. This allows us to implement
             time-continuous systems with complex dynamical behaviors
             that can be conveniently interconnected into large-scale
             networks with flexible topologies that consist of time-delay
             links and a large number of nodes. We demonstrate how we
             realize networks with periodic, chaotic, and excitable
             dynamics and study their properties. Field-programmable gate
             arrays define a new experimental paradigm that holds great
             potential to test a large body of theoretical results on the
             dynamics of complex networks, which has been beyond reach of
             traditional experimental approaches.},
   Doi = {10.1063/1.4807481},
   Key = {fds246287}
}

@article{fds246289,
   Author = {Zhu, Y and Kim, J and Gauthier, DJ},
   Title = {Aberration-corrected quantum temporal imaging
             system},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {87},
   Number = {4},
   Pages = {043808},
   Year = {2013},
   Month = {April},
   ISSN = {1050-2947},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000317193600009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Doi = {10.1103/PhysRevA.87.043808},
   Key = {fds246289}
}

@article{fds246290,
   Author = {Rosin, DP and Rontani, D and Gauthier, DJ},
   Title = {Ultrafast physical generation of random numbers using hybrid
             Boolean networks.},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {87},
   Number = {4},
   Pages = {040902},
   Year = {2013},
   Month = {April},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/23679363},
   Abstract = {We describe a high-speed physical random number generator
             based on a hybrid Boolean network with autonomous and
             clocked logic gates, realized on a reconfigurable chip. The
             autonomous logic gates are arranged in a bidirectional ring
             topology and generate broadband chaos. The clocked logic
             gates receive input from the autonomous logic gates so that
             random numbers are generated physically that pass standard
             randomness tests without further postprocessing. The large
             number of logic gates on reconfigurable chips allows for
             parallel generation of random numbers, as demonstrated by
             our implementation of 128 physical random number generators
             that achieve a real-time bit rate of 12.8Gbits/s.},
   Doi = {10.1103/PhysRevE.87.040902},
   Key = {fds246290}
}

@article{fds246292,
   Author = {Rosin, DP and Rontani, D and Gauthier, DJ and Schöll,
             E},
   Title = {Control of synchronization patterns in neural-like Boolean
             networks.},
   Journal = {Physical Review Letters},
   Volume = {110},
   Number = {10},
   Pages = {104102},
   Year = {2013},
   Month = {March},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/23521258},
   Abstract = {We study experimentally the synchronization patterns in
             time-delayed directed Boolean networks of excitable systems.
             We observe a transition in the network dynamics when the
             refractory time of the individual systems is adjusted. When
             the refractory time is on the same order of magnitude as the
             mean link time delays or the heterogeneities of the link
             time delays, cluster synchronization patterns change, or are
             suppressed entirely, respectively. We also show that these
             transitions occur when we change the properties of only a
             small number of driver nodes identified by their larger in
             degree; hence, the synchronization patterns can be
             controlled locally by these nodes. Our findings have
             implications for synchronization in biological neural
             networks.},
   Doi = {10.1103/PhysRevLett.110.104102},
   Key = {fds246292}
}

@article{fds246291,
   Author = {Zheng, H and Gauthier, DJ and Baranger, HU},
   Title = {Decoy-state quantum key distribution with nonclassical light
             generated in a one-dimensional waveguide.},
   Journal = {Optics Letters},
   Volume = {38},
   Number = {5},
   Pages = {622-624},
   Year = {2013},
   Month = {March},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/23455244},
   Abstract = {We investigate a decoy-state quantum key distribution (QKD)
             scheme with a sub-Poissonian single-photon source, which is
             generated on demand by scattering a coherent state off a
             two-level system in a one-dimensional waveguide. We show
             that, compared to coherent state decoy-state QKD, there is a
             two-fold increase of the key generation rate. Furthermore,
             the performance is shown to be robust against both parameter
             variations and loss effects of the system.},
   Key = {fds246291}
}

@article{fds246238,
   Author = {Schmittberger, BL and Greenberg, JA and Gauthier,
             DJ},
   Title = {Ultra-low-threshold optical pattern formation in a cold
             atomic vapor},
   Journal = {2013 Conference on Lasers and Electro-Optics Europe and
             International Quantum Electronics Conference,
             CLEO/Europe-IQEC 2013},
   Year = {2013},
   Month = {January},
   url = {http://dx.doi.org/10.1109/CLEOE-IQEC.2013.6801811},
   Abstract = {The study of pattern formation in nonlinear optical systems
             has provided new insight into a wide variety of phenomena
             such as fundamental many-body physics, optical soliton
             formation, nonlinear lensing, and transverse optical pattern
             formation [1]. The generation of transverse optical patterns
             in cold atomic vapors is of particular interest in condensed
             matter physics because the resulting multimode optical
             fields act back on the atoms and create self-organized
             density gratings of atoms [2] . The formation of these
             density gratings enhances the nonlinear response of the
             system, which leads to lower threshold input powers required
             for pattern formation. Achieving sufficiently low threshold
             powers would make optical pattern formation in cold atomic
             systems relevant to creating quantum networks and performing
             weak measurements [3]. © 2013 IEEE.},
   Doi = {10.1109/CLEOE-IQEC.2013.6801811},
   Key = {fds246238}
}

@article{fds246261,
   Author = {Guilbert, H and Wong, YP and Gauthier, DJ},
   Title = {Observation of elliptical patterns in type I spontaneous
             parametric down conversion},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2013},
   Month = {January},
   Abstract = {We measure the spatial profile of down-converted light from
             Type-I SPDC in BBO and BiBO crystals. We find BiBO (BBO)
             produces elliptical (circular) transverse patterns because
             the generated light experiences an angle-dependent
             (-independent) refractive index. © OSA 2013.},
   Key = {fds246261}
}

@article{fds246277,
   Author = {Kim, J and Clark, R and Gauthier, D},
   Title = {Low-noise frequency downconversion for long-distance
             distribution of entangled atomic qubits},
   Journal = {2013 IEEE Photonics Society Summer Topical Meeting Series,
             PSSTMS 2013},
   Pages = {183-184},
   Year = {2013},
   url = {http://www.phy.duke.edu/~qelectron/pubs/StipcevicSPIE2013.pdf},
   Abstract = {Distribution of quantum resources such as entanglement over
             distances beyond a few fiber attenuation lengths requires
             realization of quantum repeaters that utilize entanglement
             swapping to extend the distance between the entangled qubit
             pairs [1]. A quantum repeater is a small quantum computer
             capable of generating entangled qubit pairs with its
             neighboring repeaters and storing them in stable quantum
             memories. Once the entangled pairs are generated, it will
             perform Bell basis measurements, classical communication
             with appropriate repeaters, and single qubit gates necessary
             for entanglement swapping. For high fidelity operation, it
             might perform local operations and classical communications
             (LOCC) such as entanglement distillation [2] and/or quantum
             error correction [3,4]. Generation of remote entangled ion
             pairs mediated by photonic qubits has been demonstrated [5]
             but their reach is limited since the photons used in the
             experiment are in the UV part of the spectrum. Coherent
             conversion of the photons emitted by Yb ion at 369.5nm to a
             photon at 1310 nm would enable entanglement generation over
             long distances [6]. © 2013 IEEE.},
   Doi = {10.1109/PHOSST.2013.6614563},
   Key = {fds246277}
}

@article{fds246284,
   Author = {Rosin, DP and Rontani, D and Gauthier, DJ},
   Title = {Erratum: Ultrafast physical generation of random numbers
             using hybrid Boolean networks (Physical Review E -
             Statistical, Nonlinear, and Soft Matter Physics (2013) 87
             (040902))},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {87},
   Number = {5},
   Year = {2013},
   ISSN = {1539-3755},
   url = {http://dx.doi.org/10.1103/PhysRevE.87.059902},
   Doi = {10.1103/PhysRevE.87.059902},
   Key = {fds246284}
}

@article{fds246285,
   Author = {Jackson, AD and Huang, D and Gauthier, DJ and Venakides,
             S},
   Title = {Destructive impact of imperfect beam collimation in
             extraordinary optical transmission},
   Journal = {Journal of the Optical Society of America
             A},
   Volume = {30},
   Number = {6},
   Pages = {1281-1290},
   Year = {2013},
   ISSN = {1084-7529},
   url = {http://www.phy.duke.edu/~qelectron/pubs/JOSAA30_1281_2013.pdf},
   Abstract = {We investigate the difference between analytic predictions,
             numerical simulations, and experiments measuring the
             transmission of energy through subwavelength, periodically
             arranged holes in a metal film. At normal incidence, theory
             predicts a sharp transmission minimum when the wavelength is
             equal to the periodicity, and sharp transmission maxima at
             one or more nearby wavelengths. In experiments, the sharpest
             maximum from the theory is not observed, while the others
             appear less sharp. In numerical simulations using commercial
             electromagnetic field solvers, we find that the sharpest
             maximum appears and approaches our predictions as the
             computational resources are increased. To determine possible
             origins of the destruction of the sharp maximum, we
             incorporate additional features in our model. Incorporating
             imperfect conductivity and imperfect periodicity in our
             model leaves the sharp maximum intact. Imperfect
             collimation, on the other hand, incorporated into the model
             causes the destruction of the sharp maximum as happens in
             experiments. We provide analytic support through an
             asymptotic calculation for both the existence of the sharp
             maximum and the destructive impact of imperfect collimation.
             © 2013 Optical Society of America.},
   Doi = {10.1364/JOSAA.30.001281},
   Key = {fds246285}
}

@article{fds246286,
   Author = {Vornehm, JE and Schweinsberg, A and Shi, Z and Gauthier, DJ and Boyd,
             RW},
   Title = {Phase locking of multiple optical fiber channels for a
             slow-light-enabled laser radar system},
   Journal = {Optics express},
   Volume = {21},
   Number = {11},
   Pages = {13094-13104},
   Year = {2013},
   ISSN = {1094-4087},
   url = {http://www.phy.duke.edu/~qelectron/pubs/OptExpress21_13094_2013.pdf},
   Abstract = {Phase control is crucial to the operation of coherent beam
             combining systems, whether for laser radar or high-power
             beam combining. We have recently demonstrated a design for a
             multi-aperture, coherently combined, synchronized- and
             phased-array slow light laser radar (SLIDAR) that is capable
             of scanning in two dimensions with dynamic group delay
             compensation. Here we describe in detail the optical phase
             locking system used in the design. The phase locking system
             achieves an estimated Strehl ratio of 0.8, and signals from
             multiple emitting apertures are phase locked simultaneously
             to within p/5 radians (1/10 wave) after propagation through
             2.2 km of single-mode fiber per channel. Phase locking
             performance is maintained even as two independent slow light
             mechanisms are utilized simultaneously. © 2013 Optical
             Society of America.},
   Doi = {10.1364/OE.21.013094},
   Key = {fds246286}
}

@article{fds246288,
   Author = {Brougham, T and Barnett, SM and McCusker, KT and Kwiat, PG and Gauthier,
             DJ},
   Title = {Security of high-dimensional quantum key distribution
             protocols using Franson interferometers},
   Journal = {Journal of Physics B: Atomic, Molecular and Optical
             Physics},
   Volume = {46},
   Number = {10},
   Pages = {104010},
   Year = {2013},
   ISSN = {0953-4075},
   url = {http://www.phy.duke.edu/~qelectron/pubs/FransonQKDn3-2013.pdf},
   Abstract = {Franson interferometers are increasingly being proposed as a
             means of securing high-dimensional energy-time
             entanglement-based quantum key distribution (QKD) systems.
             Heuristic arguments have been proposed that purport to
             demonstrate the security of these schemes. We show, however,
             that such systems are vulnerable to attacks that localize
             the photons to several temporally separate locations. This
             demonstrates that a single pair of Franson interferometers
             is not a practical approach to securing high-dimensional
             energy-time entanglement-based QKD. This observation leads
             us to investigate the security of modified
             Franson-based-protocols, where Alice and Bob have two or
             more Franson interferometers. We show that such setups can
             improve the sensitivity against attacks that localize the
             photons to multiple temporal locations. While our results do
             not constitute a full security proof, they do show that a
             single pair of Franson interferometers is not secure and
             that multiple such interferometers could be a promising
             candidate for experimentally realizable high-dimensional
             QKD. © 2013 IOP Publishing Ltd.},
   Doi = {10.1088/0953-4075/46/10/104010},
   Key = {fds246288}
}

@article{fds246271,
   Author = {Bolduc, E and Leach, J and Gauthier, D and Boyd, RW},
   Title = {The security of quantum key distribution using the orbital
             angular momentum states of light},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2012},
   Month = {December},
   ISSN = {2162-2701},
   Abstract = {High-dimensional entanglement is a key resource for quantum
             cryptography. We experimentally realise the criterion for
             secure quantum key distribution when using photons entangled
             in the orbital angular momentum and angle degrees of
             freedom. © 2012 OSA.},
   Key = {fds246271}
}

@article{fds246275,
   Author = {Christensen, BG and McCusker, KT and Gauthier, DJ and Kwiat,
             PG},
   Title = {High-speed quantum key distribution using hyper-entangled
             photons},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2012},
   Month = {December},
   Abstract = {We discuss a quantum cryptography system using the timing
             and polarization degrees of freedom to produce a high bit
             rate for both technologically limited eavesdroppers and for
             any potential eavesdroppers. © 2012 OSA.},
   Key = {fds246275}
}

@article{fds246276,
   Author = {Gauthier, DJ and Guilbert, H and Zhu, Y and Shi, M and McCusker, KT and Christensen, B and Kwiat, P and Brougham, T and Barnett, SM and Chandar,
             V},
   Title = {Quantum key distribution using hyperentanglement},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2012},
   Month = {December},
   Abstract = {We describe our progress on achieving quantum key
             distribution with high photon efficiency and high rate using
             hyperentanglement. Our goal is encode 10 bits per photon and
             distribute a secure key at 1 Gbit/s. © 2012
             OSA.},
   Key = {fds246276}
}

@article{fds246279,
   Author = {Christensen, BG and McCusker, KT and Gauthier, DJ and Kwiat,
             PG},
   Title = {High-speed quantum key distribution using hyper-entangled
             photons},
   Journal = {CLEO: Science and Innovations, CLEO_SI 2012},
   Pages = {JW4A.115},
   Year = {2012},
   Month = {December},
   Abstract = {We discuss a quantum cryptography system using the timing
             and polarization degrees of freedom to produce a high bit
             rate for both technologically limited eavesdroppers and for
             any potential eavesdroppers. © OSA 2012.},
   Key = {fds246279}
}

@article{fds246280,
   Author = {Christensen, BG and McCusker, KT and Gauthier, DJ and Kwiat,
             PG},
   Title = {High-speed quantum key distribution using hyper-entangled
             photons},
   Journal = {CLEO: Applications and Technology, CLEO_AT
             2012},
   Pages = {JW4A.115},
   Year = {2012},
   Month = {December},
   Abstract = {We discuss a quantum cryptography system using the timing
             and polarization degrees of freedom to produce a high bit
             rate for both technologically limited eavesdroppers and for
             any potential eavesdroppers. © OSA 2012.},
   Key = {fds246280}
}

@article{fds246371,
   Author = {Stipcevic, M and Gauthier, DJ},
   Title = {'Precise Monte Carlo simulations of single-photon
             detectors},
   Journal = {J. Sel. Top. Quantum Electron.},
   Volume = {8727},
   Pages = {87270K},
   Editor = {M.A. Itzler and J.C. Campbell},
   Year = {2012},
   Month = {December},
   url = {http://www.phy.duke.edu/~qelectron/pubs/StipcevicSPIE2013.pdf},
   Key = {fds246371}
}

@article{fds246372,
   Author = {Gauthier, DJ},
   Title = {Comment on "Generalized grating equation for virtually
             imaged phased-array spectral dispersers".},
   Journal = {Applied Optics},
   Volume = {51},
   Number = {34},
   Pages = {8184-8186},
   Year = {2012},
   Month = {December},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/23207388},
   Abstract = {I correct an error made by Vega et al. [Appl. Opt. 42, 4152
             (2003)], who derived the spectral dispersion properties of a
             virtually imaged phased-array etalon using a ray-based,
             multibounce interference analysis. I demonstrate that the
             corrected dispersion law is in agreement with the results
             obtained by paraxial wave theory [Xiao et al., IEEE J.
             Quantum Electron.40, 420 (2004)].},
   Key = {fds246372}
}

@article{fds246373,
   Author = {Cohen, SD and Rontani, D and Gauthier, DJ},
   Title = {Ultra-high-frequency piecewise-linear chaos using delayed
             feedback loops.},
   Journal = {Chaos},
   Volume = {22},
   Number = {4},
   Pages = {043112},
   Year = {2012},
   Month = {December},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/23278047},
   Abstract = {We report on an ultra-high-frequency (>1 GHz),
             piecewise-linear chaotic system designed from low-cost,
             commercially available electronic components. The system is
             composed of two electronic time-delayed feedback loops: A
             primary analog loop with a variable gain that produces
             multi-mode oscillations centered around 2 GHz and a
             secondary loop that switches the variable gain between two
             different values by means of a digital-like signal. We
             demonstrate experimentally and numerically that such an
             approach allows for the simultaneous generation of analog
             and digital chaos, where the digital chaos can be used to
             partition the system's attractor, forming the foundation for
             a symbolic dynamics with potential applications in
             noise-resilient communications and radar.},
   Doi = {10.1063/1.4766593},
   Key = {fds246373}
}

@article{fds287611,
   Author = {Bolduc, E and Leach, J and Gauthier, D and Boyd, RW},
   Title = {The secure information capacity of photons entangled in high
             dimensions},
   Journal = {Frontiers in Optics, FIO 2012},
   Year = {2012},
   Month = {December},
   Abstract = {We quantify precisely the maximum secure information
             capacity of photons entangled in high dimensions for
             entanglement in the orbital angular momentum and angular
             degrees of freedom. © 2012.},
   Key = {fds287611}
}

@article{fds303664,
   Author = {Zheng, H and Gauthier, DJ and Baranger, HU},
   Title = {Waveguide-QED-Based Photonic Quantum Computation},
   Journal = {Phys. Rev. Lett.},
   Volume = {111},
   Pages = {090502},
   Year = {2012},
   Month = {November},
   url = {http://arxiv.org/abs/1211.1711v3},
   Abstract = {We propose a new scheme for quantum computation using flying
             qubits--propagating photons in a one-dimensional
             waveguide--interacting with matter qubits. Photon-photon
             interactions are mediated by the coupling to a three- or
             four-level system, based on which photon-photon \pi-phase
             gates (Controlled-NOT) can be implemented for universal
             quantum computation. We show that high gate fidelity is
             possible given recent dramatic experimental progress in
             superconducting circuits and photonic-crystal waveguides.
             The proposed system can be an important building block for
             future on-chip quantum networks.},
   Doi = {10.1103/PhysRevLett.111.090502},
   Key = {fds303664}
}

@article{fds246376,
   Author = {Cohen, SD and Gauthier, DJ},
   Title = {A pseudo-matched filter for chaos.},
   Journal = {Chaos},
   Volume = {22},
   Number = {3},
   Pages = {033148},
   Year = {2012},
   Month = {September},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/23020487},
   Abstract = {A matched filter maximizes the signal-to-noise ratio of a
             signal. In the recent work of Corron et al. [Chaos 20,
             023123 (2010)], a matched filter is derived for the chaotic
             waveforms produced by a piecewise-linear system. This system
             produces a readily available binary symbolic dynamics that
             can be used to perform correlations in the presence of large
             amounts of noise using the matched filter. Motivated by
             these results, we describe a pseudo-matched filter, which
             operates similarly to the original matched filter. It
             consists of a notch filter followed by a first-order,
             low-pass filter. We compare quantitatively the matched
             filter's performance to that of our pseudo-matched filter
             using correlation functions. On average, the pseudo-matched
             filter performs with a correlation signal-to-noise ratio
             that is 2.0 dB below that of the matched filter. Our
             pseudo-matched filter, though somewhat inferior in
             comparison to the matched filter, is easily realizable at
             high speed (>1 GHz) for potential radar applications.},
   Doi = {10.1063/1.4754437},
   Key = {fds246376}
}

@article{fds304569,
   Author = {Greenberg, JA and Gauthier, DJ},
   Title = {Steady-state, cavityless, multimode superradiance in a cold
             vapor},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {86},
   Number = {1},
   Year = {2012},
   Month = {July},
   ISSN = {1050-2947},
   url = {http://dx.doi.org/10.1103/PhysRevA.86.013823},
   Abstract = {We demonstrate steady-state, mirrorless superradiance in a
             cold vapor pumped by weak optical fields. Beyond a critical
             pump intensity of 1 mW/cm2, the vapor spontaneously
             transforms into a spatially self-organized state: a density
             grating forms. Scattering of the pump beams off this grating
             generates a pair of new, intense optical fields that act
             back on the vapor to enhance the atomic organization. We map
             out experimentally the superradiant phase transition
             boundary and show that it is well described by our
             theoretical model. The resulting superradiant emission is
             nearly coherent, persists for several seconds, displays
             strong temporal correlations between the various modes, and
             has a coherence time of several hundred μs. This system
             therefore has applications in fundamental studies of
             many-body physics with long-range interactions as well as
             all-optical and quantum information processing. © 2012
             American Physical Society.},
   Doi = {10.1103/PhysRevA.86.013823},
   Key = {fds304569}
}

@article{fds246375,
   Author = {Hall, GM and Holder, EJ and Cohen, SD and Gauthier,
             DJ},
   Title = {Low-cost chaotic radar design},
   Journal = {Proc. SPIE},
   Volume = {8361},
   Pages = {836112},
   Year = {2012},
   Month = {June},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/SPIE8361_836112_2012.pdf},
   Key = {fds246375}
}

@article{fds246380,
   Author = {Poutrina, E and Ciracì, C and Gauthier, DJ and Smith,
             DR},
   Title = {Enhancing four-wave-mixing processes by nanowire arrays
             coupled to a gold film.},
   Journal = {Optics express},
   Volume = {20},
   Number = {10},
   Pages = {11005-11013},
   Year = {2012},
   Month = {May},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/22565723},
   Abstract = {We consider the process of four-wave mixing in an array of
             gold nanowires strongly coupled to a gold film. Using
             full-wave simulations, we perform a quantitative comparison
             of the four-wave mixing efficiency associated with a bare
             film and films with nanowire arrays. We find that the
             strongly localized surface plasmon resonances of the coupled
             nanowires provide an additional local field enhancement
             that, along with the delocalized surface plasmon of the
             film, produces an overall four-wave mixing efficiency
             enhancement of up to six orders of magnitude over that of
             the bare film. The enhancement occurs over a wide range of
             excitation angles. The film-coupled nanowire array is easily
             amenable to nanofabrication, and could find application as
             an ultra-compact component for integrated photonic and
             quantum optic systems.},
   Key = {fds246380}
}

@article{fds246377,
   Author = {Greenberg, JA and Gauthier, DJ},
   Title = {Steady-state, cavity-less, multimode superradiance},
   Journal = {Phys. Rev. A},
   Volume = {86},
   Number = {1},
   Pages = {013823},
   Year = {2012},
   Month = {April},
   ISSN = {1050-2947},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PRA86_013823_2012.pdf},
   Abstract = {We demonstrate steady-state, mirrorless superradiance in a
             cold vapor pumped by weak optical fields. Beyond a critical
             pump intensity of 1 mW/cm2, the vapor spontaneously
             transforms into a spatially self-organized state: a density
             grating forms. Scattering of the pump beams off this grating
             generates a pair of new, intense optical fields that act
             back on the vapor to enhance the atomic organization. We map
             out experimentally the superradiant phase transition
             boundary and show that it is well described by our
             theoretical model. The resulting superradiant emission is
             nearly coherent, persists for several seconds, displays
             strong temporal correlations between the various modes, and
             has a coherence time of several hundred μs. This system
             therefore has applications in fundamental studies of
             many-body physics with long-range interactions as well as
             all-optical and quantum information processing. © 2012
             American Physical Society.},
   Doi = {10.1103/PhysRevA.86.013823},
   Key = {fds246377}
}

@article{fds246381,
   Author = {Greenberg, JA and Gauthier, DJ},
   Title = {High-order optical nonlinearity at low light
             levels},
   Journal = {EPL (Europhysics Letters)},
   Volume = {98},
   Number = {2},
   Pages = {24001-24001},
   Year = {2012},
   Month = {April},
   ISSN = {0295-5075},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/EPL98_24001_2012.pdf},
   Abstract = {We observe a nonlinear optical process in a gas of cold
             atoms that simultaneously displays the largest reported
             fifth-order nonlinear susceptibility χ (5)=1.9×10 - 12
             (m/V) 4 and high transparency. The nonlinearity results from
             the simultaneous cooling and crystallization of the gas, and
             gives rise to efficient Bragg scattering in the form of
             six-wave mixing at low light levels. For large atom-photon
             coupling strengths, the back-action of the scattered fields
             influences the light-matter dynamics. We confirm this
             interpretation by investigating the nonlinearity for
             different polarization configurations. In addition, we
             demonstrate excellent agreement between our experimental
             measurements and a theoretical model with no free
             parameters, and compare our results to those obtained using
             alternative approaches. This system may have important
             applications in many-body physics, quantum information
             processing, and multidimensional soliton formation. ©
             Europhysics Letters Association 2012.},
   Doi = {10.1209/0295-5075/98/24001},
   Key = {fds246381}
}

@article{fds246283,
   Author = {Callan, KE and Illing, L and Gauthier, DJ},
   Title = {Broadband Chaos},
   Series = {Reviews in Nonlinear Dynamics and Complexity},
   Pages = {317-332},
   Booktitle = {Nonlinear Laser Dynamics: From Quantum Dots to
             Cryptography},
   Publisher = {John Wiley-VCH Verlag},
   Address = {Weinheim},
   Editor = {K. Luege},
   Year = {2012},
   Month = {January},
   ISBN = {978-3-527-41100-9},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/BroadbandChaos_Gauthier.pdf},
   Doi = {10.1002/9783527639823.ch13},
   Key = {fds246283}
}

@article{fds246359,
   Author = {Christensen, BG and McCusker, KT and Gauthier, DJ and Kwiat,
             PG},
   Title = {High-speed quantum key distribution using hyper-entangled
             photons},
   Journal = {2012 Conference on Lasers and Electro-Optics, CLEO
             2012},
   Year = {2012},
   Abstract = {We discuss a quantum cryptography system using the timing
             and polarization degrees of freedom to produce a high bit
             rate for both technologically limited eavesdroppers and for
             any potential eavesdroppers. © 2012 OSA.},
   Key = {fds246359}
}

@article{fds246374,
   Author = {Rosin, DP and Rontani, D and Gauthier, DJ and Schöll,
             E},
   Title = {Excitability in autonomous Boolean networks},
   Journal = {EPL (Europhysics Letters)},
   Volume = {100},
   Number = {3},
   Pages = {30003},
   Year = {2012},
   ISSN = {0295-5075},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/Rosin12_Boolean_Excitability.pdf},
   Abstract = {We demonstrate theoretically and experimentally that
             excitable systems can be built with autonomous Boolean
             networks. Their experimental implementation is realized with
             asynchronous logic gates on a reconfigurabe chip. When these
             excitable systems are assembled into time-delay networks,
             their dynamics display nanosecond time scale spike
             synchronization patterns that are controllable in period and
             phase. © Copyright EPLA, 2012.},
   Doi = {10.1209/0295-5075/100/30003},
   Key = {fds246374}
}

@article{fds246378,
   Author = {Leach, J and Bolduc, E and Gauthier, DJ and Boyd,
             RW},
   Title = {Secure information capacity of photons entangled in many
             dimensions},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {85},
   Number = {6},
   Pages = {060304(R)},
   Year = {2012},
   ISSN = {1050-2947},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PRA85_060304_2012.pdf},
   Abstract = {We quantify precisely the maximum secure information
             capacity of photons entangled in high dimensions for
             entanglement in the orbital angular momentum and angular
             degrees of freedom. Our analysis takes careful account of
             the influence of experimental imperfections, such as
             nonunity detection efficiency, on the degree of
             Einstein-Podolsky-Rosen (EPR) entanglement and hence on the
             secure information capacity of the photon pairs. We find
             that there is is an optimal dimension that maximizes the
             secure information capacity whose value can be predicted
             analytically from the knowledge of only a few experimental
             parameters. © 2012 American Physical Society.},
   Doi = {10.1103/PhysRevA.85.060304},
   Key = {fds246378}
}

@article{fds246379,
   Author = {Zheng, H and Gauthier, DJ and Baranger, HU},
   Title = {Strongly correlated photons generated by coupling a three-
             or four-level system to a waveguide},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {85},
   Number = {4},
   Pages = {043832},
   Year = {2012},
   ISSN = {1050-2947},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PRA85_043832_2012.pdf},
   Abstract = {We study the generation of strongly correlated photons by
             coupling an atom to photonic quantum fields in a
             one-dimensional waveguide. Specifically, we consider a
             three-level or four-level system for the atom. Photon-photon
             bound states emerge as a manifestation of the strong
             photon-photon correlation mediated by the atom. Effective
             repulsive or attractive interaction between photons can be
             produced, causing either suppressed multiphoton transmission
             (photon blockade) or enhanced multiphoton transmission
             (photon-induced tunneling). As a result, nonclassical light
             sources can be generated on demand by sending coherent
             states into the proposed system. We calculate the
             second-order correlation function of the transmitted field
             and observe bunching and antibunching caused by the bound
             states. Furthermore, we demonstrate that the proposed system
             can produce photon pairs with a high degree of spectral
             entanglement, which have a large capacity for carrying
             information and are important for large-alphabet quantum
             communication. © 2012 American Physical
             Society.},
   Doi = {10.1103/PhysRevA.85.043832},
   Key = {fds246379}
}

@article{fds246382,
   Author = {Cohen, SD and Cavalcante, HLDDS and Gauthier, DJ},
   Title = {Subwavelength position sensing using nonlinear feedback and
             wave chaos.},
   Journal = {Physical Review Letters},
   Volume = {107},
   Number = {25},
   Pages = {254103},
   Year = {2011},
   Month = {December},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/22243079},
   Abstract = {We demonstrate a position-sensing technique that relies on
             the inherent sensitivity of chaos, where we illuminate a
             subwavelength object with a complex structured
             radio-frequency field generated using wave chaos and
             nonlinear feedback. We operate the system in a quasiperiodic
             state and analyze changes in the frequency content of the
             scalar voltage signal in the feedback loop. This allows us
             to extract the object's position with a one-dimensional
             resolution of ~λ/10,000 and a two-dimensional resolution of
             ~λ/300, where λ is the shortest wavelength of the
             illuminating source.},
   Doi = {10.1103/PhysRevLett.107.254103},
   Key = {fds246382}
}

@article{fds246274,
   Author = {Boyd, RW and Shin, H and Malik, M and O'Sullivan, C and Chan, KWC and Chang, HJ and Gauthier, DJ and Jha, A and Leach, J and Murugkar, S and Rodenburg, B},
   Title = {Applications of nonlinear optics in quantum imaging and
             quantum communication},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2011},
   Month = {December},
   Abstract = {The nonlinear optical process of spontaneous parametric
             downconversion is a standard procedure for generating
             entangled photons. Entanglement is a crucial resource for
             quantum information studies. We describe our recent results
             including the application of entangled photons to
             superresolution and to quantum communication. NLO/ISOM/ODS
             © 2011 OSA.},
   Key = {fds246274}
}

@article{fds246384,
   Author = {Zheng, H and Gauthier, DJ and Baranger, HU},
   Title = {Cavity-free photon blockade induced by many-body bound
             states.},
   Journal = {Physical Review Letters},
   Volume = {107},
   Number = {22},
   Pages = {223601},
   Year = {2011},
   Month = {November},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/22182028},
   Abstract = {The manipulation of individual, mobile quanta is a key goal
             of quantum communication; to achieve this, nonlinear
             phenomena in open systems can play a critical role. We show
             theoretically that a variety of strong quantum nonlinear
             phenomena occur in a completely open one-dimensional
             waveguide coupled to an N-type four-level system. We focus
             on photon blockade and the creation of single-photon states
             in the absence of a cavity. Many-body bound states appear
             due to the strong photon-photon correlation mediated by the
             four-level system. These bound states cause photon blockade,
             which can generate a sub-Poissonian single-photon
             source.},
   Doi = {10.1103/PhysRevLett.107.223601},
   Key = {fds246384}
}

@article{fds246387,
   Author = {Greenberg, JA and Schmittberger, BL and Gauthier,
             DJ},
   Title = {Bunching-induced optical nonlinearity and instability in
             cold atoms [Invited].},
   Journal = {Optics express},
   Volume = {19},
   Number = {23},
   Pages = {22535-22549},
   Year = {2011},
   Month = {November},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/22109132},
   Abstract = {We report a new nonlinear optical process that occurs in a
             cloud of cold atoms at low-light-levels when the incident
             optical fields simultaneously polarize, cool, and
             spatially-organize the atoms. We observe an extremely large
             effective fifth-order nonlinear susceptibility of χ(⁵) =
             7.6 × 10⁻¹⁵ (m/V)⁴, which results in efficient Bragg
             scattering via six-wave mixing, slow group velocities (∼
             c/10⁵), and enhanced atomic coherence times (> 100 μs).
             In addition, this process is particularly sensitive to the
             atomic temperatures, and provides a new tool for in-situ
             monitoring of the atomic momentum distribution in an optical
             lattice. For sufficiently large light-matter couplings, we
             observe an optical instability for intensities as low as ∼
             1 mW/cm² in which new, intense beams of light are generated
             and result in the formation of controllable transverse
             optical patterns.},
   Key = {fds246387}
}

@article{fds246386,
   Author = {Lee, M and Zhu, Y and Gauthier, DJ and Gehm, ME and Neifeld,
             MA},
   Title = {Information-theoretic analysis of a stimulated-Brillouin-scattering-based
             slow-light system},
   Journal = {Appl. Opt.},
   Volume = {50},
   Number = {32},
   Pages = {6063},
   Year = {2011},
   Month = {October},
   ISSN = {1559-128X},
   url = {http://hdl.handle.net/10161/5103 Duke open
             access},
   Abstract = {We use an information-theoretic method developed by Neifeld
             and Lee [J. Opt. Soc. Am. A 25, C31 (2008)] to analyze the
             performance of a slow-light system. Slow-light is realized
             in this system via stimulated Brillouin scattering in a 2
             km-long, room-temperature, highly nonlinear fiber pumped by
             a laser whose spectrum is tailored and broadened to 5GHz. We
             compute the information throughput (IT), which quantifies
             the fraction of information transferred from the source to
             the receiver and the information delay (ID), which
             quantifies the delay of a data stream at which the
             information transfer is largest, for a range of experimental
             parameters.We also measure the eye-opening (EO) and
             signal-to-noise ratio (SNR) of the transmitted data stream
             and find that they scale in a similar fashion to the
             information-theoretic method. Our experimental findings are
             compared to a model of the slow-light system that accounts
             for all pertinent noise sources in the system as well as
             data-pulse distortion due to the filtering effect of the SBS
             process. The agreement between our observations and the
             predictions of our model is very good. Furthermore, we
             compare measurements of the IT for an optimal flattop gain
             profile and for a Gaussianshaped gain profile. For a given
             pump-beam power, we find that the optimal profile gives a
             36% larger ID and somewhat higher IT compared to the
             Gaussian profile. Specifically, the optimal (Gaussian)
             profile produces a fractional slow-light ID of 0.94 (0.69)
             and an IT of 0.86 (0.86) at a pump-beam power of 450mW and a
             data rate of 2:5 Gbps. Thus, the optimal profile better
             utilizes the available pump-beam power, which is often a
             valuable resource in a system design. © 2011 Optical
             Society of America.},
   Doi = {10.1364/AO.50.006063},
   Key = {fds246386}
}

@article{fds246392,
   Author = {Hwang, RY and Gauthier, DJ and Wallace, D and Afshari,
             NA},
   Title = {Refractive changes after descemet stripping endothelial
             keratoplasty: a simplified mathematical model.},
   Journal = {Investigative Ophthalmology and Visual Science},
   Volume = {52},
   Number = {2},
   Pages = {1043-1054},
   Year = {2011},
   Month = {February},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/21051729},
   Abstract = {PURPOSE: To develop a mathematical model that can predict
             refractive changes after Descemet stripping endothelial
             keratoplasty (DSEK). METHODS: A mathematical formula based
             on the Gullstrand eye model was generated to estimate the
             change in refractive power of the eye after DSEK. This model
             was applied to four DSEK cases retrospectively, to compare
             measured and predicted refractive changes after DSEK.
             RESULTS: The refractive change after DSEK is determined by
             calculating the difference in the power of the eye before
             and after DSEK surgery. The power of the eye post-DSEK
             surgery can be calculated with modified Gullstrand eye model
             equations that incorporate the change in the posterior
             radius of curvature and change in the distance between the
             principal planes of the cornea and lens after DSEK. Analysis
             of this model suggests that the ratio of central to
             peripheral graft thickness (CP ratio) and central thickness
             can have significant effect on refractive change where
             smaller CP ratios and larger graft thicknesses result in
             larger hyperopic shifts. This model was applied to four
             patients, and the average predicted hyperopic shift in the
             overall power of the eye was calculated to be 0.83 D. This
             change reflected in a mean of 93% (range, 75%-110%) of
             patients' measured refractive shifts. CONCLUSIONS: This
             simplified DSEK mathematical model can be used as a first
             step for estimating the hyperopic shift after DSEK. Further
             studies are necessary to refine the validity of this
             model.},
   Doi = {10.1167/iovs.10-5839},
   Key = {fds246392}
}

@article{fds246391,
   Author = {Zhu, Y and Lee, M and Neifeld, MA and Gauthier, DJ},
   Title = {High-fidelity, broadband stimulated-Brillouin-scattering-based
             slow light using fast noise modulation.},
   Journal = {Optics express},
   Volume = {19},
   Number = {2},
   Pages = {687-697},
   Year = {2011},
   Month = {January},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/21263608},
   Abstract = {We demonstrate a 5-GHz-broadband tunable slow-light device
             based on stimulated Brillouin scattering in a standard
             highly-nonlinear optical fiber pumped by a
             noise-current-modulated laser beam. The noisemodulation
             waveform uses an optimized pseudo-random distribution of the
             laser drive voltage to obtain an optimal flat-topped gain
             profile, which minimizes the pulse distortion and maximizes
             pulse delay for a given pump power. In comparison with a
             previous slow-modulation method, eye-diagram and
             signal-to-noise ratio (SNR) analysis show that this
             broadband slow-light technique significantly increases the
             fidelity of a delayed data sequence, while maintaining the
             delay performance. A fractional delay of 0.81 with a SNR of
             5.2 is achieved at the pump power of 350 mW using a
             2-km-long highly nonlinear fiber with the fast
             noise-modulation method, demonstrating a 50% increase in
             eye-opening and a 36% increase in SNR in the
             comparison.},
   Doi = {10.1364/oe.19.000687},
   Key = {fds246391}
}

@article{fds246354,
   Author = {Zhu, Y and Wang, J and Zhang, R and Gauthier, DJ},
   Title = {Interference of FSBS and Kerr effect in a standard
             highly-nonlinear fiber},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {7917},
   Year = {2011},
   ISSN = {0277-786X},
   url = {http://dx.doi.org/10.1117/12.876817},
   Abstract = {We observe efficient forward stimulated Brillouin scattering
             (FSBS) in a standard 2-km highly-nonlinear optical fiber
             (NHLF), where we see multiple resonance peaks between 425
             MHz to 1.1 GHz. The most efficient acoustooptical coupling
             appears for the 20th radially-guided acoustic mode at 933.8
             MHz, which has maximum spatial overlapping with the tightly
             confined optical mode in the NHLF fiber. A large gain
             coefficient of 34.7 W-1 is obtained at this resonance when
             pumped with a 8 mW continuous-wave (cw) beam at 1550 nm, and
             an enhanced gain of 57.6 is obtained by using a pulsed pump
             beam at 80 mW. Interference between the FSBS process and the
             Kerr effect is observed to enhance the resonance and cause
             asymmetric profile for the observed resonances. © 2011
             SPIE.},
   Doi = {10.1117/12.876817},
   Key = {fds246354}
}

@article{fds246355,
   Author = {Zhu, Y and Kim, J and Gauthier, DJ},
   Title = {Selective phase-matched bragg scattering for single-photon
             frequency conversion in a nonlinear waveguide},
   Journal = {2011 IEEE Photonics Society Summer Topical Meeting
             Series},
   Pages = {47-48},
   Year = {2011},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/ProcIEEESummerTopicals2011_47.pdf},
   Abstract = {We describe a design for phase-matched Bragg scattering for
             single-photon conversion between two arbitrary frequencies.
             The bandwidth of the Bragg scattering process is calculated
             and immunity against competing processes is discussed. ©
             2011 IEEE.},
   Doi = {10.1109/PHOSST.2011.6000037},
   Key = {fds246355}
}

@article{fds246356,
   Author = {Oughstun, KE and Cartwright, NA and Gauthier, DJ and Jeong,
             H},
   Title = {Optical precursors in the singular and weak dispersion
             limits: Reply to comment},
   Journal = {Journal of the Optical Society of America
             B},
   Volume = {28},
   Number = {3},
   Pages = {468-469},
   Year = {2011},
   ISSN = {0740-3224},
   url = {http://dx.doi.org/10.1364/JOSAB.28.000468},
   Abstract = {The comment by Macke and Ségard [J. Opt. Soc. Am. B 28,
             450-452 (2011)] of our recently published paper [J. Opt.
             Soc. Am. B 27, 1664-1670 (2010)] is shown here to be
             primarily due to a misunderstanding of the raison d'être of
             our paper. © 2011 Optical Society of America.},
   Doi = {10.1364/JOSAB.28.000468},
   Key = {fds246356}
}

@article{fds246357,
   Author = {Boulanger, B and Cundiff, ST and Gauthier, DJ and Karlsson, M and Lu,
             Y-Q and Norwood, RA and Skryabin, D and Taira, T},
   Title = {Focus issue introduction: Nonlinear optics},
   Journal = {Optical Materials Express},
   Volume = {1},
   Number = {7},
   Pages = {1393-1398},
   Year = {2011},
   ISSN = {2159-3930},
   url = {http://dx.doi.org/10.1364/OME.1.001393},
   Abstract = {It is now fifty years since the original observation of
             second harmonic generation ushered in the field of nonlinear
             optics, close on the heels of the invention of the laser.
             This feature issue celebrates this anniversary with papers
             that span the range from new nonlinear optical materials,
             through the increasingly novel methods that have been
             developed for phase matching, to emerging areas such as
             nonlinear metamaterials and plasmonic enhancement of optical
             properties. It is clear that the next fifty years of
             nonlinear optics will witness a proliferation of new
             applications with increasing technological impact. © 2011
             Optical Society of America.},
   Doi = {10.1364/OME.1.001393},
   Key = {fds246357}
}

@article{fds246358,
   Author = {Boulanger, B and Cundiff, ST and Gauthier, DJ and Karlsson, M and Lu,
             Y-Q and Norwood, RA and Skryabin, D and Taira, T},
   Title = {Focus issue introduction: Nonlinear optics},
   Journal = {Optics express},
   Volume = {19},
   Number = {23},
   Pages = {23561-23566},
   Year = {2011},
   ISSN = {1094-4087},
   url = {http://dx.doi.org/10.1364/OE.19.023561},
   Abstract = {It is now fifty years since the original observation of
             second harmonic generation ushered in the field of nonlinear
             optics, close on the heels of the invention of the laser.
             This feature issue celebrates this anniversary with papers
             that span the range from new nonlinear optical materials,
             through the increasingly novel methods that have been
             developed for phase matching, to emerging areas such as
             nonlinear metamaterials and plasmonic enhancement of optical
             properties. It is clear that the next fifty years of
             nonlinear optics will witness a proliferation of new
             applications with increasing technological impact. © 2011
             Optical Society of America.},
   Doi = {10.1364/OE.19.023561},
   Key = {fds246358}
}

@article{fds246383,
   Author = {Zhang, R and Greenberg, JA and Fischer, MC and Gauthier,
             DJ},
   Title = {Controllable ultrabroadband slow light in a warm rubidium
             vapor},
   Journal = {Journal of the Optical Society of America
             B},
   Volume = {28},
   Number = {11},
   Pages = {2578-2583},
   Year = {2011},
   ISSN = {0740-3224},
   url = {http://hdl.handle.net/10161/5105 Duke open
             access},
   Abstract = {We study ultrabroadband slow light in a warm rubidium vapor
             cell. By working between the D1 and D2 transitions, we find
             a several-nanometer window centered at 788:4nm in which the
             group index is highly uniform and the absorption is small
             (<1%). We demonstrate that we can control the group delay
             by varying the temperature of the cell, and we observe a
             tunable fractional delay of 18 for pulses as short as 250 fs
             (6:9nm bandwidth) with a fractional broadening of only 0.65
             and a power leakage of 55%. We find that a simple
             theoretical model is in excellent agreement with the
             experimental results. Using this model, we discuss the
             impact of the pulse's spectral characteristics on the
             distortion it incurs during propagation through the vapor.
             © 2011 Optical Society of America.},
   Doi = {10.1364/JOSAB.28.002578},
   Key = {fds246383}
}

@article{fds246385,
   Author = {Rosin, DP and Callan, KE and Gauthier, DJ and Schöll,
             E},
   Title = {Pulse-train solutions and excitability in an optoelectronic
             oscillator},
   Journal = {EPL (Europhysics Letters)},
   Volume = {96},
   Number = {3},
   Pages = {34001},
   Year = {2011},
   ISSN = {0295-5075},
   url = {http://hdl.handle.net/10161/5102 Duke open
             access},
   Abstract = {We study an optoelectronic time-delay oscillator with
             bandpass filtering for different values of the filter
             bandwidth. Our experiments show novel pulse-train solutions
             with pulse widths that can be controlled over a
             three-order-of-magnitude range, with a minimum pulse width
             of ∼150 ps. The equations governing the dynamics of our
             optoelectronic oscillator are similar to the FitzHugh-Nagumo
             model from neurodynamics with delayed feedback in the
             excitable and oscillatory regimes. Using a nullclines
             analysis, we derive an analytical proportionality between
             pulse width and the low-frequency cutoff of the bandpass
             filter, which is in agreement with experiments and numerical
             simulations. Furthermore, the nullclines help to describe
             the shape of the waveforms. © Europhysics Letters
             Association.},
   Doi = {10.1209/0295-5075/96/34001},
   Key = {fds246385}
}

@article{fds246388,
   Author = {Zhang, R and Zhu, Y and Wang, J and Gauthier, DJ},
   Title = {Fiber-length dependence of slow light with a swept-frequency
             source},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {7949},
   Pages = {794909},
   Year = {2011},
   ISSN = {0277-786X},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/ZhangSPIE7949_794909_2011.pdf},
   Abstract = {We study the slow light effect via stimulated Brillouin
             scattering (SBS) using broadly-tunable frequency-swept
             sources, such as that used in optical coherence tomography.
             Slow light can be achieved, in principle, over the entire
             transparency window of the optical fiber (many 100's of nm
             at telecommunication wavelengths). We demonstrate a SBS slow
             light delay of more than 1 ns over a wide bandwidth at 1.55
             μm using a 2-km-long highly nonlinear fiber with a source
             sweep rate of 20 MHz/μs and a delay of 10 ns using a
             10-m-long photonic crystal fiber with a sweep rate of 400
             MHz/μs. We also find that, for a given sweep rate R, there
             is an optimum value of fiber length L to obtain the largest
             delay. © 2011 SPIE.},
   Doi = {10.1117/12.876805},
   Key = {fds246388}
}

@article{fds246389,
   Author = {Boyd, RW and Jha, A and Malik, M and O'Sullivan, C and Rodenburg, B and Gauthier, DJ},
   Title = {Quantum key distribution in a high-dimensional state space:
             Exploiting the transverse degree of freedom of the
             photon},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {7948},
   Pages = {79480L},
   Year = {2011},
   ISSN = {0277-786X},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/BoydSPIE7948_79480L_2011.pdf},
   Abstract = {We describe a procedure to construct a free-space quantum
             key distribution system that can carry many bits of
             information per photon. We also describe the current status
             of our laboratory implementation of these plans. © 2011
             SPIE.},
   Doi = {10.1117/12.873491},
   Key = {fds246389}
}

@article{fds246390,
   Author = {Wang, J and Zhu, Y and Zhang, R and Gauthier, DJ},
   Title = {FSBS resonances observed in a standard highly nonlinear
             fiber},
   Journal = {Optics express},
   Volume = {19},
   Number = {6},
   Pages = {5339-5349},
   Year = {2011},
   ISSN = {1094-4087},
   url = {http://hdl.handle.net/10161/5107 Duke open
             access},
   Abstract = {Forward stimulated Brillouin scattering (FSBS) is observed
             in a standard 2-km-long highly nonlinear fiber. The
             frequency of FSBS arising from multiple radially guided
             acoustic resonances is observed up to gigahertz frequencies.
             The tight confinement of the light and acoustic field
             enhances the interaction and results in a large gain
             coefficient of 34.7 W-1 at a frequency of 933.8 MHz. We also
             find that the profile on the anti-Stokes side of the pump
             beam have lineshapes that are asymmetric, which we show is
             due to the interference between FSBS and the optical Kerr
             effect. The measured FSBS resonance linewidths are found to
             increase linearly with the acoustic frequency. Based on this
             scaling, we conclude that dominant contribution to the
             linewidth is from surface damping due to the fiber jacket
             and structural nonuniformities along the fiber. © 2011
             Optical Society of America.},
   Doi = {10.1364/OE.19.005339},
   Key = {fds246390}
}

@article{fds246393,
   Author = {Jeong, H and Dawes, AMC and Gauthier, DJ},
   Title = {Carrier-frequency dependence of a step-modulated pulse
             propagating through a weakly dispersive single
             narrow-resonance absorber},
   Journal = {Journal of Modern Optics},
   Volume = {58},
   Number = {10},
   Pages = {865-872},
   Year = {2011},
   ISSN = {0950-0340},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/JModOpt58_865_2011.pdf},
   Abstract = {We observe interference between the optical precursors and
             the main signal for small optical depth α0L∼1, in which
             the main signal cannot be entirely absorbed. Since the main
             signal oscillates at the carrier frequency of the input
             pulse and precursors oscillate at medium resonance
             frequency, in our case carrier frequency dependence of the
             total transmitted field is observed as a form of modulation
             patterns oscillating at the detuning frequency. To
             distinguish between the Sommerfeld and Brillouin precursors
             for the case of weakly dispersive off-resonance medium, we
             utilize asymptotic precursor theory under the assumption of
             small detuning. © 2011 Taylor & Francis.},
   Doi = {10.1080/09500340.2011.575961},
   Key = {fds246393}
}

@article{fds246397,
   Author = {Zhang, R and Zhu, Y and Wang, J and Gauthier, DJ},
   Title = {Slow light with a swept-frequency source.},
   Journal = {Optics express},
   Volume = {18},
   Number = {26},
   Pages = {27263-27269},
   Year = {2010},
   Month = {December},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/21197004},
   Abstract = {ct: We introduce a new concept for stimulated-Brillouin-scattering-based
             slow light in optical fibers that is applicable for
             broadly-tunable frequency-swept sources. It allows slow
             light to be achieved, in principle, over the entire
             transparency window of the optical fiber. We demonstrate a
             slow light delay of 10 ns at 1.55 μm using a 10-m-long
             photonic crystal fiber with a source sweep rate of 400
             MHz/μs and a pump power of 200 mW. We also show that there
             exists a maximal delay obtainable by this method, which is
             set by the SBS threshold, independent of sweep rate. For our
             fiber with optimum length, this maximum delay is ~38 ns,
             obtained for a pump power of 760 mW.},
   Key = {fds246397}
}

@article{fds246267,
   Author = {Zhang, R and Zhu, Y and Wang, J and Gauthier, DJ},
   Title = {Broadband slow light with a swept-frequency
             source},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2010},
   Month = {December},
   Abstract = {We demonstrate a pulse delay of 1.5 ns over a wide bandwidth
             via stimulated Brillouin scattering in an optical fiber
             pumped by a swept source with a sweep rate of 20 MHz/μs. ©
             2010 Optical Society of America.},
   Key = {fds246267}
}

@article{fds246268,
   Author = {Zhu, Y and Wang, J and Zhang, R and Gauthier, DJ},
   Title = {Observation of forward stimulated brillouin scattering in a
             standard highly-nonlinear fiber},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2010},
   Month = {December},
   Abstract = {We observe forward stimulated Brillouin scattering (FSBS) in
             a standard highly-nonlinear optical fiber a numerous
             acoustic resonance frequencies that occur between ~30 MHz to
             beyond the detection limit of 1.5 GHz. © 2010 Optical
             Society of America.},
   Key = {fds246268}
}

@article{fds246269,
   Author = {Greenberg, JA and Gauthier, DJ},
   Title = {Self-phase matched four-wave mixing in cold
             vapor},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2010},
   Month = {December},
   Abstract = {We demonstrate novel four-wave mixing processes in a cold
             vapor that arise due to atomic spatial self-organization.
             This leads to a reduced parametric oscillation threshold and
             a more rapid increase of gain with pump power. © 2010
             Optical Society of America.},
   Key = {fds246269}
}

@article{fds246270,
   Author = {Gauthier, DJ and Greenberg, JA},
   Title = {Toward single-photon nonlinear optics via self-assembled
             ultracold atoms},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2010},
   Month = {December},
   Abstract = {We observe spontaneous parametric oscillation in a
             laser-driven cloud of cold atoms. The threshold for this
             instability is lowered dramatically due to self-assembled
             atomic gratings that allow for self-phase matching of
             atom-field wave mixing processes. © 2010 Optical Society of
             America.},
   Key = {fds246270}
}

@article{fds246400,
   Author = {Callan, KE and Illing, L and Gao, Z and Gauthier, DJ and Schöll,
             E},
   Title = {Broadband chaos generated by an optoelectronic
             oscillator.},
   Journal = {Physical Review Letters},
   Volume = {104},
   Number = {11},
   Pages = {113901},
   Year = {2010},
   Month = {March},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/20366476},
   Abstract = {We study an optoelectronic time-delay oscillator that
             displays high-speed chaotic behavior with a flat, broad
             power spectrum. The chaotic state coexists with a linearly
             stable fixed point, which, when subjected to a
             finite-amplitude perturbation, loses stability initially via
             a periodic train of ultrafast pulses. We derive approximate
             mappings that do an excellent job of capturing the observed
             instability. The oscillator provides a simple device for
             fundamental studies of time-delay dynamical systems and can
             be used as a building block for ultrawide-band sensor
             networks.},
   Doi = {10.1103/PhysRevLett.104.113901},
   Key = {fds246400}
}

@article{fds246402,
   Author = {Cavalcante, HLDDS and Gauthier, DJ and Socolar, JES and Zhang,
             R},
   Title = {On the origin of chaos in autonomous Boolean
             networks.},
   Journal = {Philosophical Transactions A},
   Volume = {368},
   Number = {1911},
   Pages = {495-513},
   Year = {2010},
   Month = {January},
   ISSN = {1364-503X},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/20008414},
   Abstract = {We undertake a systematic study of the dynamics of Boolean
             networks to determine the origin of chaos observed in recent
             experiments. Networks with nodes consisting of ideal logic
             gates are known to display either steady states, periodic
             behaviour or an ultraviolet catastrophe where the number of
             logic-transition events circulating in the network per unit
             time grows as a power law. In an experiment, the non-ideal
             behaviour of the logic gates prevents the ultraviolet
             catastrophe and may lead to deterministic chaos. We identify
             certain non-ideal features of real logic gates that enable
             chaos in experimental networks. We find that short-pulse
             rejection and asymmetry between the logic states tend to
             engender periodic behaviour, at least for the simplest
             networks. On the other hand, we find that a memory effect
             termed 'degradation' can generate chaos. Our results
             strongly suggest that deterministic chaos can be expected in
             a large class of experimental Boolean-like networks. Such
             devices may find application in a variety of technologies
             requiring fast complex waveforms or flat power spectra, and
             can be used as a test-bed for fundamental studies of
             real-world Boolean-like networks.},
   Doi = {10.1098/rsta.2009.0235},
   Key = {fds246402}
}

@article{fds246353,
   Author = {Gauthier, D and Guizar-Sicairos, M and Ge, X and Boutu, W and Carré, B and Fienup, JR and Merdji, H},
   Title = {Single-shot femtosecond x-ray holography using extended
             references},
   Journal = {Physical Review Letters},
   Volume = {105},
   Number = {9},
   Year = {2010},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/PhysRevLett.105.093901},
   Abstract = {In the context of x-ray lensless imaging, we present a
             recent approach for Fourier transform holography based on
             the use of extended references. Major advances shown here
             rely on a high signal efficiency and on the direct image
             reconstruction of the object performed by a simple linear
             derivative. Moreover, the extended holographic reference is
             easy to manufacture and can be applied to a variety of
             imaging experiments. Here we demonstrate single-shot imaging
             with a table-top, laser-based coherent soft x-ray source. A
             spatial resolution of 110 nm was obtained with an
             integration time of 20 fs. © 2010 The American Physical
             Society.},
   Doi = {10.1103/PhysRevLett.105.093901},
   Key = {fds246353}
}

@article{fds246396,
   Author = {Zheng, H and Gauthier, DJ and Baranger, HU},
   Title = {Waveguide QED: Many-body bound-state effects in coherent and
             Fock-state scattering from a two-level system},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {82},
   Number = {6},
   Pages = {063816},
   Year = {2010},
   ISSN = {1050-2947},
   url = {http://hdl.handle.net/10161/8974 Duke open
             access},
   Abstract = {Strong coupling between a two-level system (TLS) and bosonic
             modes produces dramatic quantum optics effects. We consider
             a one-dimensional continuum of bosons coupled to a single
             localized TLS, a system which may be realized in a variety
             of plasmonic, photonic, or electronic contexts. We present
             the exact many-body scattering eigenstate obtained by
             imposing open boundary conditions. Multiphoton bound states
             appear in the scattering of two or more photons due to the
             coupling between the photons and the TLS. Such bound states
             are shown to have a large effect on scattering of both Fock-
             and coherent-state wave packets, especially in the
             intermediate coupling-strength regime. We compare the
             statistics of the transmitted light with a coherent state
             having the same mean photon number: as the interaction
             strength increases, the one-photon probability is suppressed
             rapidly, and the two- and three-photon probabilities are
             greatly enhanced due to the many-body bound states. This
             results in non-Poissonian light. © 2010 The American
             Physical Society.},
   Doi = {10.1103/PhysRevA.82.063816},
   Key = {fds246396}
}

@article{fds246398,
   Author = {Zhu, Y and Cabrera-Granado, E and Calderon, OG and Melle, S and Okawachi, Y and Gaeta, AL and Gauthier, DJ},
   Title = {Competition between the modulation instability and
             stimulated Brillouin scattering in a broadband slow light
             device},
   Journal = {Journal of Optics A: Pure and Applied Optics},
   Volume = {12},
   Number = {10},
   Pages = {104019},
   Year = {2010},
   ISSN = {2040-8978},
   url = {http://hdl.handle.net/10161/5082 Duke open
             access},
   Abstract = {We observe competition between the modulation instability
             (MI) and stimulated Brillouin scattering (SBS) in a 9.2 GHz
             broadband SBS slow light device, in which a standard 20 km
             long single-mode LEAF fibre is used as the SBS medium. We
             find that MI is dominant and depletes most of the pump power
             when we use an intense pump beam at ∼1.55 μm, where the
             LEAF fibre is anomalously dispersive. The dominance of the
             MI in the LEAF-fibre-based system suppresses the SBS gain,
             degrading the SBS slow light delay and limiting the SBS
             gain-bandwidth to 125 dB GHz. In a dispersion-shifted highly
             nonlinear fibre, the SBS slow light delay is improved due to
             the suppression of the MI, resulting in a gain-bandwidth
             product of 344 dB GHz, limited by our available pump power
             of 0.82 W. © 2010 IOP Publishing Ltd.},
   Doi = {10.1088/2040-8978/12/10/104019},
   Key = {fds246398}
}

@article{fds246399,
   Author = {Oughstun, KE and Cartwright, NA and Gauthier, DJ and Jeong,
             H},
   Title = {Optical precursors in the singular and weak dispersion
             limits},
   Journal = {Journal of the Optical Society of America
             B},
   Volume = {27},
   Number = {8},
   Pages = {1664-1670},
   Year = {2010},
   ISSN = {0740-3224},
   url = {http://hdl.handle.net/10161/5083 Duke open
             access},
   Abstract = {The description of the precursor fields in a
             single-resonance Lorentz model dielectric is considered in
             the singular and weak dispersion limits. The singular
             dispersion limit is obtained as the damping approaches zero
             and the material dispersion becomes increasingly
             concentrated about the resonance frequency. The algebraic
             peak amplitude decay of the Brillouin precursor with
             propagation distance z>0 then changes from a z-1/2 to a z
             -1/3 behavior. The weak dispersion limit is obtained as the
             material density decreases to zero. The material dispersion
             then becomes vanishingly small everywhere and the precursors
             become increasingly compressed in the space-time domain
             immediately following the speed-of-light point (z,
             t)=(z,z/c). In order to circumvent the numerical
             difficulties introduced in this case, an approximate
             equivalence relation is derived that allows the propagated
             field evolution due to an ultrawideband signal to be
             calculated in an equivalent dispersive medium that is highly
             absorptive. © 2010 Optical Society of America.},
   Doi = {10.1364/JOSAB.27.001664},
   Key = {fds246399}
}

@article{fds246401,
   Author = {Dawes, AMC and Gauthier, DJ and Schumacher, S and Kwong, NH and Binder,
             R and Smirl, AL},
   Title = {Transverse optical patterns for ultra-low-light-level
             all-optical switching},
   Journal = {Laser & Photonics Reviews},
   Volume = {4},
   Number = {2},
   Pages = {221-243},
   Year = {2010},
   ISSN = {1863-8880},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/LaserPhotonRev4_221_2010.pdf},
   Abstract = {We review recent theoretical and experimental efforts toward
             developing an all-optical switch based on transverse optical
             patterns. Transverse optical patterns are formed when
             counterpropagating laser beams interact with a nonlinear
             medium. A perturbation, in the form of a weak switch beam
             injected into the nonlinear medium, controls the orientation
             of the generated patterns. Each state of the pattern
             orientation is associated with a state of the switch. That
             is, information is stored in the orientation state. A
             realization of this switch using a warm rubidium vapor shows
             that it can be actuated by as few as 600±40 photons with a
             response time of 5μs. Models of non-linear optical
             interactions in semiconductor quantum wells and
             microresonators suggest these systems are also suitable for
             use as fast all-optical switches using this same conceptual
             design, albeit at higher switching powers. © 2010 by
             WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.},
   Doi = {10.1002/lpor.200810067},
   Key = {fds246401}
}

@article{fds246230,
   Author = {Dobrovolny, HM and Berger, CM and Brown, NH and Neu, WK and Gauthier,
             DJ},
   Title = {Spatial heterogeneity of restitution properties and the
             onset of alternans.},
   Journal = {Annual International Conference of the IEEE Engineering in
             Medicine and Biology - Proceedings},
   Pages = {4186-4189},
   Year = {2009},
   Month = {December},
   ISSN = {1557-170X},
   url = {http://dx.doi.org/10.1109/IEMBS.2009.5333929},
   Abstract = {Traditionally, it was believed that cardiac rhythm stability
             was governed by the slope of the restitution curve (RC),
             which relates the duration of an action potential to the
             preceding diastolic interval. However, a single RC does not
             exist; rate-dependence leads to multiple distinct RCs. We
             measure spatial differences in the steady-state action
             potential duration (APD), as well as in three different RCs:
             the S1-S2 (SRC), constant-basic-cycle-length (BRC), and
             dynamic (DRC), and correlate these differences with the
             tissue's propensity to develop alternans. The results show
             that spatial differences in APD, SRC slope, and DRC slope
             are correlated with the tissue's propensity to exhibit
             alternans. These results may lead to a new diagnostic
             approach to identifying patients with vulnerability to
             arrhythmias, which will involve pacing at slow rates and
             analyzing spatial differences in restitution
             properties.},
   Doi = {10.1109/IEMBS.2009.5333929},
   Key = {fds246230}
}

@article{fds246404,
   Author = {Zhang, R and de S Cavalcante and HLD and Gao, Z and Gauthier, DJ and Socolar, JES and Adams, MM and Lathrop, DP},
   Title = {Boolean chaos.},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {80},
   Number = {4 Pt 2},
   Pages = {045202},
   Year = {2009},
   Month = {October},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/19905381},
   Abstract = {We observe deterministic chaos in a simple network of
             electronic logic gates that are not regulated by a clocking
             signal. The resulting power spectrum is ultrawide band,
             extending from dc to beyond 2 GHz. The observed behavior is
             reproduced qualitatively using an autonomously updating
             Boolean model with signal propagation times that depend on
             the recent history of the gates and filtering of pulses of
             short duration, whose presence is confirmed experimentally.
             Electronic Boolean chaos may find application as an
             ultrawide-band source of radio waves.},
   Doi = {10.1103/PhysRevE.80.045202},
   Key = {fds246404}
}

@article{fds167525,
   Author = {D.J. Gauthier},
   Title = {Superluminal communication in quantum mechanics},
   Pages = {776-769},
   Booktitle = {an invited article in Compendium of Quantum Physics:
             Concepts, Experiments, History and Philosophy},
   Publisher = {Springer-Verlag},
   Address = {Berlin},
   Editor = {D. Greenberger and K. Hentschel and F. Weinert},
   Year = {2009},
   Month = {April},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/GauthierCompendiumPreprint2006.pdf},
   Key = {fds167525}
}

@article{fds246266,
   Author = {Greenberg, JA and Gauthier, DJ},
   Title = {Superradiance in an ultracold thermal vapor},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2009},
   Month = {January},
   Abstract = {We report on superradiant Rayleigh scattering in an
             anisotropic, cold thermal vapor. We identify threshold pump
             powers and atomic densities for entering the superradiant
             regime, and observe temporal correlations between light
             emitted in opposite directions. © 2009 Optical Society of
             America.},
   Key = {fds246266}
}

@article{fds246350,
   Author = {Boyd, RW and Gauthier, DJ and Narum, P},
   Title = {Causality in superluminal pulse propagation},
   Journal = {Lecture Notes in Physics},
   Volume = {789},
   Pages = {175-204},
   Booktitle = {an invited chapter in Time in Quantum Mechanics
             II},
   Publisher = {Springer},
   Address = {Berlin},
   Editor = {G. Muga and A. Ruschhaupt and A. del Campo},
   Year = {2009},
   ISSN = {0075-8450},
   url = {http://dx.doi.org/10.1007/978-3-642-03174-8_7},
   Abstract = {We have reviewed recent theoretical and experimental
             research that establishes that pulses can propagate through
             material systems with superluminal or even negative group
             velocities. Nonetheless, these exotic propagation effects
             are fully compatible with established notion of causality.
             At a fundamental level, the nature of slow and fast light
             seems fairly well understood. But there still may be some
             surprises on the horizon.We noted in the body of this
             chapter that there seems to be no fundamental limit on how
             much one can delay a light pulse using slow-light methods,
             and in fact pulse delays as great as 80 pulse lengths have
             been observed [29]. Conversely, there seem to be severe
             limitations that limit the amount of advancement for a
             fast-light system to at most several pulse widths [71].1 But
             can these limitations be overcome? This is an intriguing
             question that merits further examination. © 2010
             Springer-Verlag Berlin Heidelberg.},
   Doi = {10.1007/978-3-642-03174-8_7},
   Key = {fds246350}
}

@article{fds246351,
   Author = {Dobrovolny, HM and Berger, CM and Brown, NH and Neu, WK and Gauthier,
             DJ},
   Title = {Spatial heterogeneity of restitution properties and the
             onset of alternans.},
   Journal = {Annual International Conference of the IEEE Engineering in
             Medicine and Biology - Proceedings},
   Volume = {2009},
   Pages = {4186-4189},
   Year = {2009},
   ISSN = {1557-170X},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/19964626},
   Abstract = {Traditionally, it was believed that cardiac rhythm stability
             was governed by the slope of the restitution curve (RC),
             which relates the duration of an action potential to the
             preceding diastolic interval. However, a single RC does not
             exist; rate-dependence leads to multiple distinct RCs. We
             measure spatial differences in the steady-state action
             potential duration (APD), as well as in three different RCs:
             the S1-S2 (SRC), constant-basic-cycle-length (BRC), and
             dynamic (DRC), and correlate these differences with the
             tissue's propensity to develop alternans. The results show
             that spatial differences in APD, SRC slope, and DRC slope
             are correlated with the tissue's propensity to exhibit
             alternans. These results may lead to a new diagnostic
             approach to identifying patients with vulnerability to
             arrhythmias, which will involve pacing at slow rates and
             analyzing spatial differences in restitution
             properties.},
   Doi = {10.1109/IEMBS.2009.5333929},
   Key = {fds246351}
}

@article{fds246352,
   Author = {Ravasio, A and Gauthier, D and Maia, FRNC and Billon, M and Caumes, J-P and Garzella, D and Géléoc, M and Gobert, O and Hergott, J-F and Pena,
             A-M and al, E},
   Title = {Single-shot diffractive imaging with a table-top femtosecond
             soft X-ray laser-harmonics source},
   Journal = {Physical Review Letters},
   Volume = {103},
   Number = {2},
   Year = {2009},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/PhysRevLett.103.028104},
   Abstract = {Coherent x-ray diffractive imaging is a powerful method for
             studies on nonperiodic structures on the nanoscale. Access
             to femtosecond dynamics in major physical, chemical, and
             biological processes requires single-shot diffraction data.
             Up to now, this has been limited to intense coherent pulses
             from a free electron laser. Here we show that laser-driven
             ultrashort x-ray sources offer a comparatively inexpensive
             alternative. We present measurements of single-shot
             diffraction patterns from isolated nano-objects with a
             single 20fs pulse from a table-top high-harmonic x-ray
             laser. Images were reconstructed with a resolution of 119 nm
             from the single shot and 62 nm from multiple shots. © 2009
             The American Physical Society.},
   Doi = {10.1103/PhysRevLett.103.028104},
   Key = {fds246352}
}

@article{fds246403,
   Author = {Boyd, RW and Gauthier, D},
   Title = {Controlling the velocity of light pulses},
   Journal = {Science},
   Volume = {326},
   Number = {5956},
   Pages = {1074-1077},
   Year = {2009},
   ISSN = {0036-8075},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/Science326_1074_2009.pdf},
   Abstract = {It is now possible to exercise a high degree of control over
             the velocity at which light pulses pass through material
             media. This velocity, known as the group velocity, can be
             made to be very different from the speed of light in a
             vacuum c. Specifically, the group velocity of light can be
             made much smaller than c, greater than c, or even negative.
             We present a survey of methods for establishing extreme
             values of the group velocity, concentrating especially on
             methods that work in room-temperature solids. We also
             describe some applications of slow light.},
   Doi = {10.1126/science.1170885},
   Key = {fds246403}
}

@article{fds246405,
   Author = {Lefew, WR and Venakides, S and Gauthier, DJ},
   Title = {Accurate description of optical precursors and their
             relation to weak-field coherent optical transients},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {79},
   Number = {6},
   Pages = {063842},
   Year = {2009},
   ISSN = {1050-2947},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PRA79_063842_2009.pdf},
   Abstract = {We study theoretically the propagation of a step-modulated
             optical field as it passes through a dispersive dielectric
             made up of a dilute collection of oscillators characterized
             by a single narrow-band resonance. The propagated field is
             given in terms of an integral of a Fourier type, which
             cannot be evaluated even for simple models of the dispersive
             dielectric. The fact that the oscillators have a low number
             density (dilute medium) and have a narrow-band resonance
             allows us to simplify the integrand. In this case, the
             integral can be evaluated exactly, although it is not
             possible using this method to separate out the transient
             part of the propagated field known as optical precursors. We
             also use an asymptotic method (saddle-point method) to
             evaluate the integral. The contributions to the integral
             related to the saddle points of the integrand give rise to
             the optical precursors. We obtain analytic expressions for
             the precursor fields and the domain over which the
             asymptotic method is valid. When combined to obtain the
             total transient field, we find that the agreement between
             the solutions obtained by the asymptotic and the exact
             methods is excellent. Our results demonstrate that
             precursors can persist for many nanoseconds and the chirp in
             the instantaneous frequency of the precursors can manifest
             itself in beats in the transmitted intensity. Our work
             strongly suggests that precursors have been observed in many
             previous experiments. © 2009 The American Physical
             Society.},
   Doi = {10.1103/PhysRevA.79.063842},
   Key = {fds246405}
}

@article{fds246407,
   Author = {Greenberg, JA and Gauthier, DJ},
   Title = {Transient dynamics and momentum redistribution in cold atoms
             via recoil-induced resonances},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {79},
   Number = {3},
   Pages = {033414},
   Year = {2009},
   ISSN = {1050-2947},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PRA79_033414.pdf},
   Abstract = {We use an optically dense anisotropic magneto-optical trap
             to study recoil-induced resonances (RIRs) in the transient
             high-gain regime. We find that two distinct mechanisms
             govern the atomic dynamics: the finite, frequency-dependent
             atomic response time and momentum-space population
             redistribution. At low input probe intensities, the residual
             Doppler width of the atoms, combined with the finite atomic
             response time, result in a linear transient hysteretic
             effect that modifies the locations, widths, and magnitudes
             of the resulting gain spectra depending on the sign of the
             scan chirp. When larger intensities (i.e., greater than a
             few μW/ cm2) are incident on the atomic sample for several
             μs, hole burning in the atomic sample momentum distribution
             leads to a coherent population redistribution that persists
             for approximately 100 μs. We propose using RIRs to engineer
             the atomic momentum distribution to enhance the nonlinear
             atom-photon coupling. We present a numerical model and
             compare the calculated and experimental results to verify
             our interpretation. © 2009 The American Physical
             Society.},
   Doi = {10.1103/PhysRevA.79.033414},
   Key = {fds246407}
}

@article{fds318445,
   Author = {Dobrovolny, HM and Berger, CM and Brown, NH and Neu, WK and Gauthier,
             DJ},
   Title = {Spatial heterogeneity of restitution properties and the
             onset of alternans},
   Journal = {Proceedings of the 31st Annual International Conference of
             the IEEE Engineering in Medicine and Biology Society:
             Engineering the Future of Biomedicine, EMBC
             2009},
   Pages = {4186-4189},
   Year = {2009},
   url = {http://dx.doi.org/10.1109/IEMBS.2009.5333929},
   Abstract = {Traditionally, it was believed that cardiac rhythm stability
             was governed by the slope of the restitution curve (RC),
             which relates the duration of an action potential to the
             preceding diastolic interval. However, a single RC does not
             exist; rate-dependence leads to multiple distinct RCs. We
             measure spatial differences in the steady-state action
             potential duration (APD), as well as in three different RCs:
             the S1-S2 (SRC), constant-basic-cycle-length (BRC), and
             dynamic (DRC), and correlate these differences with the
             tissue's propensity to develop alternans. The results show
             that spatial differences in APD, SRC slope, and DRC slope
             are correlated with the tissue's propensity to exhibit
             alternans. These results may lead to a new diagnostic
             approach to identifying patients with vulnerability to
             arrhythmias, which will involve pacing at slow rates and
             analyzing spatial differences in restitution properties.
             ©2009 IEEE.},
   Doi = {10.1109/IEMBS.2009.5333929},
   Key = {fds318445}
}

@article{fds167526,
   Author = {Z. Zhu and D.J. Gauthier and A.L. Gaeta and R.W.
             Boyd},
   Title = {Slow light in optical waveguides},
   Pages = {37-57},
   Booktitle = {an invited chapter in Slow Light: Science and
             Applications},
   Publisher = {CRC Press},
   Address = {Boca Raton},
   Editor = {J. Khurgin and R.S. Tucker},
   Year = {2008},
   Month = {December},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/slow_light_waveguide.pdf},
   Key = {fds167526}
}

@article{fds246408,
   Author = {Cabrera Granado and E and Gauthier, DJ},
   Title = {Recent advancements in SBS Slow Light},
   Journal = {an invited article in Opt. Pura Apl.},
   Volume = {41},
   Pages = {313},
   Year = {2008},
   Month = {December},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OptPuraApl41_313_2008.pdf},
   Key = {fds246408}
}

@article{fds246409,
   Author = {Juarez, AA and Vilaseca, R and Zhu, Z and Gauthier,
             DJ},
   Title = {Room-temperature spectral hole burning in an engineered
             inhomogeneously broadened resonance.},
   Journal = {Optics Letters},
   Volume = {33},
   Number = {20},
   Pages = {2374-2376},
   Year = {2008},
   Month = {October},
   ISSN = {0146-9592},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/18923627},
   Abstract = {We observe spectral hole burning in a room-temperature
             optical fiber pumped by a spectrally broadened pump beam.
             This beam drives the stimulated Brillouin process, creating
             an inhomogeneously broadened resonance in the material whose
             shape can be engineered by tailoring the beam's spectrum. A
             monochromatic saturating beam "burns" a narrow spectral hole
             that is approximately 10(4) times narrower than the
             inhomogeneous width of the resonance. This research paves
             the way toward agile optical information processing and
             storage using standard telecommunication
             components.},
   Key = {fds246409}
}

@article{fds304568,
   Author = {Cabrera-Granado, E and Calderón, OG and Melle, S and Gauthier,
             DJ},
   Title = {Observation of large 10-Gb/s SBS slow light delay with low
             distortion using an optimized gain profile.},
   Journal = {Optics express},
   Volume = {16},
   Number = {20},
   Pages = {16032-16042},
   Year = {2008},
   Month = {September},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/18825242},
   Abstract = {An optimum SBS gain profile is designed to achieve better
             slow-light performance. It consists of a nearly flat-top
             profile with sharp edges. Tunable delays up to 3 pulse
             widths for 100-ps-long input pulses, corresponding to 10
             Gb/s data rates, are found while keeping an output-input
             pulse-width ratio below 1.8. Bit-error-rate (BER)
             measurements performed for a non-return-to-zero modulation
             format demonstrates 28 ps of delay under error-free
             operation.},
   Key = {fds304568}
}

@article{fds246410,
   Author = {Cabrera-Granado, E and Calderón, OG and Melle, S and Gauthier,
             DJ},
   Title = {Observation of large 10-Gb/s SBS slow light delay with low
             distortion using an optimized gain profile},
   Journal = {Opt. Express},
   Volume = {16},
   Number = {16032},
   Pages = {16032-16042},
   Year = {2008},
   Month = {September},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OptExpress16_16032_2008.pdf},
   Abstract = {An optimum SBS gain profile is designed to achieve better
             slow-light performance. It consists of a nearly flat-top
             profile with sharp edges. Tunable delays up to 3 pulse
             widths for 100-ps-long input pulses, corresponding to 10
             Gb/s data rates, are found while keeping an output-input
             pulse-width ratio below 1.8. Bit-error-rate (BER)
             measurements performed for a non-return-to-zero modulation
             format demonstrates 28 ps of delay under error-free
             operation.},
   Key = {fds246410}
}

@article{fds246278,
   Author = {Illing, L and Gauthier, DJ and Blakely, JN},
   Title = {Controlling Fast Chaos in Optoelectronic Delay Dynamical
             Systems},
   Pages = {405-425},
   Booktitle = {Handbook of Chaos Control, 2nd Ed.},
   Publisher = {WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim,
             Germany},
   Editor = {E. Schöll and H. G. Schuster},
   Year = {2008},
   Month = {May},
   ISBN = {978-3-527-40605-0},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/IllingChaosHandbookPreprint2006.pdf},
   Doi = {10.1002/9783527622313.ch19},
   Key = {fds246278}
}

@article{fds246260,
   Author = {Gauthier, DJ and Juarez, AA and Vilaseca, R and Zhu,
             Z},
   Title = {Room-temperature spectral hole burning via
             SBS},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2008},
   Month = {January},
   Abstract = {We observe spectral hole burning in a room-temperature
             optical fiber due to saturation of the stimulated Brillouin
             scattering process. The spectral hole is ~104 times narrower
             than the width of the resonance. © 2008 Optical Society of
             America.},
   Key = {fds246260}
}

@article{fds246293,
   Author = {Gauthier, DJ and IEEE},
   Title = {Slow Light and Stored Light using SBS in an Optical
             Fiber},
   Journal = {2008 34TH EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION
             (ECOC)},
   Year = {2008},
   ISBN = {978-1-4244-2228-9},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000300411200317&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Key = {fds246293}
}

@article{fds246343,
   Author = {Zhao, X and Schaeffer, DG and Krassowska, W and Gauthier,
             DJ},
   Title = {A model-independent technique for eigenvalue identification
             and its application in predicting cardiac
             alternans},
   Journal = {ASME International Mechanical Engineering Congress and
             Exposition, Proceedings},
   Volume = {2},
   Pages = {301-302},
   Year = {2008},
   url = {http://dx.doi.org/10.1115/IMECE2007-43380},
   Abstract = {Predicting cardiac alternans is a crucial step toward
             detection and prevention of ventricular fibrillation, a
             heart rhythm disorder that kills hundreds of thousands of
             people in the US each year. According to the theory of
             dynamical systems, cardiac alternans is mediated by a
             period-doubling bifurcation, which is associated with
             variations in a characteristic eigenvalue. Thus, knowing the
             eigenvalues would allow one to predict the onset of
             alternans. The existing criteria for alternans either adopt
             unrealistically simple assumptions and thus produce
             erroneous predictions or rely on complicated intrinsic
             functions, which are not possible to measure experimentally.
             In this work, we present a model-independent technique to
             estimate a system's eigenvalues without requirements on the
             knowledge of the underlying dynamic model. The method is
             based on principal components analysis of a pseudo-state
             space; therefore, it allows one to compute the dominant
             eigenvalues of a system using the time history of a single
             measurable variable, e.g. the transmembrane voltage or the
             intracellular calcium concentration in cardiac experiments.
             Numerical examples based on a cardiac model verify the
             accuracy of the method. Thus, the technique provides a
             promising tool for predicting alternans in real-time
             experiments. Copyright © 2007 by ASME.},
   Doi = {10.1115/IMECE2007-43380},
   Key = {fds246343}
}

@article{fds246344,
   Author = {Dawes, AMC and Gauthier, DJ},
   Title = {Transverse patterns for all-optical switching},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Booktitle = {Proceedings of The Ninth Rochester Conference on Coherence
             on Quantum Optics (CQO9)},
   Publisher = {American Institute of Physics},
   Address = {Melville, NY},
   Editor = {N. Bigelow and J. Eberly and C. Stroud, Jr.},
   Year = {2008},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/cqo9.pdf},
   Abstract = {Transverse optical patterns, generated by nonlinear
             interactions, rotate in the presence of a weak switch beam.
             Using an experimental system with increased symmetry, we
             observe that the switch can be actuated by ∼2100 photons.
             © 2008 Optical Society of America.},
   Doi = {10.1109/QELS.2008.4553025},
   Key = {fds246344}
}

@article{fds246345,
   Author = {Gauthier, DJ},
   Title = {Slow light and stored light using SBS in an optical
             fiber},
   Journal = {European Conference on Optical Communication,
             ECOC},
   Year = {2008},
   url = {http://dx.doi.org/10.1109/ECOC.2008.4729396},
   Abstract = {Recently, slow light and stored light has been achieved in
             room temperature optical fibers at telecommunication
             wavelengths, which is accelerating the transition of these
             techniques to applications. © 2008 IEEE.},
   Doi = {10.1109/ECOC.2008.4729396},
   Key = {fds246345}
}

@article{fds246346,
   Author = {Cabrera-Granado, E and Gauthier, DJ},
   Title = {Recent advancements in stimulated-Brillouin-scattering slow
             light},
   Journal = {Optica Pura y Aplicada},
   Volume = {41},
   Number = {4},
   Pages = {313-323},
   Year = {2008},
   ISSN = {0030-3917},
   Abstract = {A review on the work performed by our group on slow light
             via Stimulating Brillouin scattering (SBS) is presented. We
             describe the fundamentals of the slow-light phenomena and
             how SBS can be used to obtain tunable optical delays in
             optical fibers. We then review the mechanisms to overcome
             the limitations imposed by the narrow SBS resonance
             bandwidth and to optimize the slow-light performance for
             data rates used in modern telecommunication networks. We
             also describe the process of coherent light storage in
             optical fibers based on SBS which paves the way to optical
             buffering applications. Finally, future perspectives of this
             exciting field of research are discussed. © Sociedad
             Española de Óptica.},
   Key = {fds246346}
}

@article{fds246348,
   Author = {Zhu, Z and Gauthier, DJ and Boyd, RW},
   Title = {Light storage via stimulated brillouin scattering in an
             optical fiber},
   Journal = {Optics & Photonics News},
   Volume = {19},
   Number = {12},
   Pages = {40-},
   Year = {2008},
   ISSN = {1047-6938},
   url = {http://dx.doi.org/10.1364/OPN.19.12.000040},
   Abstract = {A simple method for storing optical pulses in a
             room-temperature optical fiber was demonstrated. The storage
             of optical data pulses is achieved by coherently
             transferring their information content to a slow-moving
             acoustic excitation in the fiber through their interaction
             with an additional optical 'write' pulse. The acoustic
             excitation is later converted back to the optical domain by
             interaction with a 'read' pulse. The write and read pulses
             should be much shorter than the data pulses and their area
             must equal π/2, to obtain high efficiency of the storage
             and retrieval processes. The method uses off-the-shelf
             components and operates at a wavelength of about 1.55 μm.
             Results for storage and retrieval of a sequence of multiple
             2-ns data pulses demonstrate that the retrieved light
             replicates the input data stream with reasonable
             fidelity.},
   Doi = {10.1364/OPN.19.12.000040},
   Key = {fds246348}
}

@article{fds246406,
   Author = {Gehring, GM and Boyd, RW and Gaeta, AL and Gauthier, DJ and Willner,
             AE},
   Title = {Fiber-based slow-light technologies},
   Journal = {Journal of Lightwave Technology},
   Volume = {26},
   Number = {23},
   Pages = {3752-3762},
   Year = {2008},
   ISSN = {0733-8724},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PTL26_3752_2008.pdf},
   Abstract = {A review of current fiber-based technologies capable of
             producing slow-light effects is presented, with emphasis on
             the applicability of these technologies to
             telecommunications. We begin with a review of the basic
             concepts of phase velocity, group velocity, and group delay.
             We then present a survey of some of the figures of merit
             used to quantify the engineering properties of slow-light
             systems. We also present a description of several of the
             physical processes that are commonly used to induce a
             slow-light effect. Finally, a review of some recent advances
             in this field is presented. © 2008 IEEE.},
   Doi = {10.1109/JLT.2008.2004883},
   Key = {fds246406}
}

@article{fds246411,
   Author = {Zhao, X and Schaeffer, DG and Berger, CM and Krassowska, W and Gauthier,
             DJ},
   Title = {Cardiac alternans arising from an unfolded border-collision
             bifurcation},
   Journal = {Journal of Computational and Nonlinear Dynamics},
   Volume = {3},
   Number = {4},
   Pages = {223-232},
   Year = {2008},
   ISSN = {1555-1423},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000264934900004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Abstract = {Following an electrical stimulus, the transmembrane voltage
             of cardiac tissue rises rapidly and remains at a constant
             value before returning to the resting value, a phenomenon
             known as an action potential. When the pacing rate of a
             periodic train of stimuli is increased above a critical
             value, the action potential undergoes a period-doubling
             bifurcation, where the resulting alternation of the action
             potential duration is known as alternans in medical
             literature. Existing cardiac models treat alternans either
             as a smooth or as a border-collision bifurcation. However,
             recent experiments in paced cardiac tissue reveal that the
             bifurcation to altemans exhibits hybrid smooth/honsmooth
             behaviors, which can be qualitatively described by a model
             of so-called unfolded border-collision bifurcation. In this
             paper we obtain analytical solutions of the unfolded
             border-collision model and use it to explore the crossover
             between smooth and nonsmooth behaviors. Our analysis shows
             that the hybrid smooth/nonsmooth behavior is due to large
             variations in the system's properties over a small interval
             of the biurcation parameter, providing guidance for the
             development of future models. Copyright © 2008 by
             ASME.},
   Doi = {10.1115/1.2960467},
   Key = {fds246411}
}

@article{fds246412,
   Author = {Evertson, DW and Holcomb, MR and Eames, MDC and Bray, M-A and Sidorov,
             VY and Xu, J and Wingard, H and Dobrovolny, HM and Woods, MC and Gauthier,
             DJ and Wikswo, JP},
   Title = {High-resolution high-speed panoramic cardiac imaging
             system},
   Journal = {IEEE Transactions on Biomedical Engineering},
   Volume = {55},
   Number = {3},
   Pages = {1241-1243},
   Year = {2008},
   ISSN = {0018-9294},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/IEEETransBME55_1241_2008.pdf},
   Abstract = {A panoramic cardiac imaging system consisting of three
             high-speed CCD cameras has been developed to image the
             surface electrophysiology of a rabbit heart via fluorescence
             imaging using a voltage-sensitive fluorescent dye. A robust,
             unique mechanical system was designed to accommodate the
             three cameras and to adapt to the requirements of future
             experiments. A unified computer interface was created for
             this application - a single workstation controls all three
             CCD cameras, illumination, stimulation, and a stepping motor
             that rotates the heart. The geometric reconstruction
             algorithms were adapted from a previous cardiac imaging
             system. We demonstrate the system by imaging a polymorphic
             cardiac tachycardia. © 2006 IEEE.},
   Doi = {10.1109/TBME.2007.912417},
   Key = {fds246412}
}

@article{fds246413,
   Author = {Pant, R and Stenner, MD and Neifeld, MA and Gauthier,
             DJ},
   Title = {Optimal pump profile designs for broadband SBS slow-light
             systems},
   Journal = {Optics express},
   Volume = {16},
   Number = {4},
   Pages = {2764-2777},
   Year = {2008},
   ISSN = {1094-4087},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OptExpress16_2764_2008.pdf},
   Abstract = {We describe a methodology for designing the optimal gain
             profiles for gain-based, tunable, broadband, slow-light
             pulse delay devices based on stimulated Brillouin
             scattering. Optimal gain profiles are obtained under system
             constraints such as distortion, total pump power, and
             maximum gain. The delay performance of three candidate
             systems: Gaussian noise pump broadened (GNPB), optimal
             gain-only, and optimal gain+absorption are studied using
             Gaussian and super-Gaussian pulses. For the same pulse
             bandwidth, we find that the optimal gain+absorption medium
             improves the delay performance by 2.1 times the GNPB medium
             delay and 1.3 times the optimal gain-only medium delay for
             Gaussian pulses. For the super-Gaussian pulses the optimal
             gain-only medium provides a fractional pulse delay 1.8 times
             the GNPB medium delay. © 2008 Optical Society of
             America.},
   Doi = {10.1364/OE.16.002764},
   Key = {fds246413}
}

@article{fds246414,
   Author = {Dawes, AMC and Illing, L and Greenberg, JA and Gauthier,
             DJ},
   Title = {All-optical switching with transverse optical
             patterns},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {77},
   Number = {1},
   Pages = {013833},
   Year = {2008},
   ISSN = {1050-2947},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/Switching_PRA_77_013833.pdf},
   Abstract = {We demonstrate an all-optical switch that operates at
             ultra-low-light levels and exhibits several features
             necessary for use in optical switching networks. An input
             switching beam, wavelength λ, with an energy density of
             10-2 photons per optical cross section [σ= λ2 (2π)]
             changes the orientation of a two-spot pattern generated via
             parametric instability in warm rubidium vapor. The
             instability is induced with less than 1 mW of total pump
             power and generates several μWs of output light. The switch
             is cascadable: the device output is capable of driving
             multiple inputs, and exhibits transistor-like signal-level
             restoration with both saturated and intermediate response
             regimes. Additionally, the system requires an input power
             proportional to the inverse of the response time, which
             suggests thermal dissipation does not necessarily limit the
             practicality of optical logic devices. © 2008 The American
             Physical Society.},
   Doi = {10.1103/PhysRevA.77.013833},
   Key = {fds246414}
}

@article{fds311269,
   Author = {Zhao, X and Schaeffer, DG and Berger, CM and Krassowska, W and Gauthier,
             DJ},
   Title = {Cardiac alternans arising from an unfolded border-collision
             bifurcation},
   Journal = {2007 Proceedings of the ASME International Design
             Engineering Technical Conferences and Computers and
             Information in Engineering Conference, DETC2007},
   Volume = {5 PART A},
   Pages = {223-232},
   Year = {2008},
   url = {http://dx.doi.org/10.1115/DETC2007-35304},
   Abstract = {Following an electrical stimulus, the transmembrane voltage
             of cardiac tissue rises rapidly and remains at a constant
             value before returning to the resting value, a phenomenon
             known as an action potential. When the pacing rate of a
             periodic train of stimuli is increased above a critical
             value, the action potential undergoes a period-doubling
             bifurcation, where the resulting alternation of the action
             potential duration is known as alternans in the medical
             literature. In principle, a period-doubling bifurcation may
             occur through either a smooth or a nonsmooth mechanism.
             Previous experiments reveal that the bifurcation to
             alternans exhibits hybrid smooth/nonsmooth behaviors, which
             is due to large variations in the system's properties over a
             small interval of bifurcation parameter. To reproduce the
             experimentally observed hybrid behaviors, we have developed
             a model of alternans that exhibits an unfolded
             border-collision bifurcation. Excellent agreement between
             simulation of the model and experimental data suggests that
             features of the unfolded border-collision model should be
             included in modeling cardiac alternans. Copyright © 2007 by
             ASME.},
   Doi = {10.1115/DETC2007-35304},
   Key = {fds311269}
}

@article{fds246417,
   Author = {Greenberg, JA and Oriá, M and Dawes, AMC and Gauthier,
             DJ},
   Title = {Absorption-induced trapping in an anisotropic
             magneto-optical trap.},
   Journal = {Optics express},
   Volume = {15},
   Number = {26},
   Pages = {17699-17708},
   Year = {2007},
   Month = {December},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/19551066},
   Abstract = {We report on a simple anisotropic magneto-optical trap for
             neutral atoms that produces a large sample of cold atoms
             confined in a cylindrically-shaped volume with a high aspect
             ratio (100:1). Due to the large number of trapped atoms, the
             laser beams that propagate along the optically thick axis of
             the trap to cool the atoms are substantially attenuated. We
             demonstrate that the resulting intensity imbalance produces
             a net force that spatially localizes the atoms. This limits
             both the trap length and the total number of trapped atoms.
             Rotating the cooling beams by a small angle relative to the
             trap axis avoids the problem of attenuation, and atoms can
             be trapped throughout the entire available trapping volume.
             Numerical and experimental results are reported that
             demonstrate the effects of absorption in an anisotropic
             trap, and a steady-state, line-center optical path length of
             55 is measured for a probe beam propagating along the length
             of the trap.},
   Key = {fds246417}
}

@article{fds246415,
   Author = {Berger, CM and Cain, JW and Socolar, JES and Gauthier,
             DJ},
   Title = {Control of electrical alternans in simulations of paced
             myocardium using extended time-delay autosynchronization.},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {76},
   Number = {4 Pt 1},
   Pages = {041917},
   Year = {2007},
   Month = {Fall},
   ISSN = {1539-3755},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/17995036},
   Abstract = {Experimental studies have linked alternans, an abnormal
             beat-to-beat alternation of cardiac action potential
             duration, to the genesis of lethal arrhythmias such as
             ventricular fibrillation. Prior studies have considered
             various closed-loop feedback control algorithms for
             perturbing interstimulus intervals in such a way that
             alternans is suppressed. However, some experimental cases
             are restricted in that the controller's stimuli must preempt
             those of the existing waves that are propagating in the
             tissue, and therefore only shortening perturbations to the
             underlying pacing are allowed. We present results
             demonstrating that a technique known as extended time-delay
             autosynchronization (ETDAS) can effectively control
             alternans locally while operating within the above
             constraints. We show that ETDAS, which has already been used
             to control chaos in physical systems, has numerous
             advantages over previously proposed alternans control
             schemes.},
   Doi = {10.1103/PhysRevE.76.041917},
   Key = {fds246415}
}

@article{fds246419,
   Author = {Berger, CM and Zhao, X and Schaeffer, DG and Dobrovolny, HM and Krassowska, W and Gauthier, DJ},
   Title = {Period-doubling bifurcation to alternans in paced cardiac
             tissue: crossover from smooth to border-collision
             characteristics.},
   Journal = {Physical Review Letters},
   Volume = {99},
   Number = {5},
   Pages = {058101},
   Year = {2007},
   Month = {August},
   ISSN = {0031-9007},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/17930795},
   Abstract = {We investigate, both experimentally and theoretically, the
             period-doubling bifurcation to alternans in heart tissue.
             Previously, this phenomenon has been modeled with either
             smooth or border-collision dynamics. Using a modification of
             existing experimental techniques, we find a hybrid behavior:
             Very close to the bifurcation point, the dynamics is smooth,
             whereas further away it is border-collision-like. The
             essence of this behavior is captured by a model that
             exhibits what we call an unfolded border-collision
             bifurcation. This new model elucidates that, in an
             experiment, where only a limited number of data points can
             be measured, the smooth behavior of the bifurcation can
             easily be missed.},
   Doi = {10.1103/PhysRevLett.99.058101},
   Key = {fds246419}
}

@article{fds246421,
   Author = {Brown, NH and Dobrovolny, HM and Gauthier, DJ and Wolf,
             PD},
   Title = {A Fiber-Based Ratiometric Optical Cardiac Mapping Channel
             using a Diffraction Grating and Split Detector},
   Journal = {Biophys. J.},
   Volume = {93},
   Number = {1},
   Pages = {254},
   Year = {2007},
   Month = {July},
   ISSN = {0006-3495},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/17416627},
   Abstract = {Optical fiber-based mapping systems are used to record the
             cardiac action potential (AP) throughout the myocardium. The
             optical AP contains a contraction-induced motion artifact
             (MA), which makes it difficult to accurately measure the
             action potential duration (APD). MA is removed by preventing
             contraction with electrical-mechanical uncoupling drugs,
             such as 2,3-butanedione monoxime (BDM). We designed a novel
             fiber-based ratiometric optical channel using a blue light
             emitting diode, a diffraction grating, and a split
             photodetector that can accurately measure the cardiac AP
             without the need for BDM. The channel was designed based on
             simulations using the optical design software ZEMAX. The
             channel has an electrical bandwidth of 150 Hz and an root
             mean-square dark noise of 742 muV. The channel successfully
             recorded the cardiac AP from the wall of five rabbit heart
             preparations without the use of BDM. After 20-point median
             filtering, the mean signal/noise ratio was 25.3 V/V. The APD
             measured from the base of a rabbit heart was 134 +/- 8.4 ms,
             compared to 137.6 +/- 3.3 ms from simultaneous
             microelectrode recordings. This difference was not
             statistically significant (p-value = 0.3). The quantity of
             MA removed was also measured using the motion ratio. The
             reduction in MA was significant (p-value = 0.0001). This
             fiber-based system is the first of its kind to enable
             optical APD measurements in the beating heart wall without
             the use of BDM.},
   Doi = {10.1529/biophysj.106.101154},
   Key = {fds246421}
}

@article{fds246424,
   Author = {Zhao, X and Schaeffer, DG and Berger, CM and Gauthier,
             DJ},
   Title = {Small-Signal Amplification of Period-Doubling Bifurcations
             in Smooth Iterated Maps.},
   Journal = {Nonlinear Dynamics},
   Volume = {48},
   Number = {4},
   Pages = {381-389},
   Year = {2007},
   Month = {Spring},
   ISSN = {0924-090X},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/19112525},
   Abstract = {Various authors have shown that, near the onset of a
             period-doubling bifurcation, small perturbations in the
             control parameter may result in much larger disturbances in
             the response of the dynamical system. Such amplification of
             small signals can be measured by a gain defined as the
             magnitude of the disturbance in the response divided by the
             perturbation amplitude. In this paper, the perturbed
             response is studied using normal forms based on the most
             general assumptions of iterated maps. Such an analysis
             provides a theoretical footing for previous experimental and
             numerical observations, such as the failure of linear
             analysis and the saturation of the gain. Qualitative as well
             as quantitative features of the gain are exhibited using
             selected models of cardiac dynamics.},
   Doi = {10.1007/s11071-006-9092-2},
   Key = {fds246424}
}

@article{fds246425,
   Author = {Schaeffer, DG and Cain, JW and Gauthier, DJ and Kalb, SS and Oliver, RA and Tolkacheva, EG and Ying, W and Krassowska, W},
   Title = {An ionically based mapping model with memory for cardiac
             restitution.},
   Journal = {Bulletin of Mathematical Biology},
   Volume = {69},
   Number = {2},
   Pages = {459-482},
   Year = {2007},
   Month = {Spring},
   ISSN = {0092-8240},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/17237915},
   Abstract = {Many features of the sequence of action potentials produced
             by repeated stimulation of a patch of cardiac muscle can be
             modeled by a 1D mapping, but not the full behavior included
             in the restitution portrait. Specifically, recent
             experiments have found that (i) the dynamic and S1-S2
             restitution curves are different (rate dependence) and (ii)
             the approach to steady state, which requires many action
             potentials (accommodation), occurs along a curve distinct
             from either restitution curve. Neither behavior can be
             produced by a 1D mapping. To address these shortcomings, ad
             hoc 2D mappings, where the second variable is a "memory"
             variable, have been proposed; these models exhibit
             qualitative features of the relevant behavior, but a
             quantitative fit is not possible. In this paper we introduce
             a new 2D mapping and determine a set of parameters for it
             that gives a quantitatively accurate description of the full
             restitution portrait measured from a bullfrog ventricle. The
             mapping can be derived as an asymptotic limit of an
             idealized ionic model in which a generalized concentration
             acts as a memory variable. This ionic basis clarifies how
             the present model differs from previous models. The ionic
             basis also provides the foundation for more extensive
             cardiac modeling: e.g., constructing a PDE model that may be
             used to study the effect of memory on propagation. The
             fitting procedure for the mapping is straightforward and can
             easily be applied to obtain a mathematical model for data
             from other experiments, including experiments on different
             species.},
   Doi = {10.1007/s11538-006-9116-6},
   Key = {fds246425}
}

@article{fds246428,
   Author = {Gauthier, DJ},
   Title = {Solitons go Slow},
   Journal = {an invited article in Nature Photonics},
   Volume = {1},
   Pages = {92},
   Year = {2007},
   Month = {February},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/NaturePhotonics1_92_2007.pdf},
   Key = {fds246428}
}

@article{fds246209,
   Author = {Zhang, B and Yan, LS and Zhang, L and Willner, AE and Zhu, Z and Gauthier,
             DJ},
   Title = {Broadband SBS slow light using simple spectrally-sliced
             pumping},
   Journal = {2007 33rd European Conference and Exhibition of Optical
             Communication, ECOC 2007},
   Year = {2007},
   Month = {January},
   ISBN = {9783800730421},
   Abstract = {We demonstrate broadband SBS slow-light using
             spectrally-sliced pumping. Both 2.5-Gb/s NRZ-OOK and
             NRZ-DPSK signals are delayed by maximum 170-ps with 4-dB
             power-penalty. Periodic spectrally-sliced multi-channel
             pumping scheme is proposed within a single slow-light
             medium.},
   Key = {fds246209}
}

@article{fds246255,
   Author = {Gauthier, DJ},
   Title = {Progress on stopped light and large-delay slow light in
             optical fibers},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2007},
   Month = {January},
   Abstract = {Recently, slow light was achieved in room temperature
             optical waveguides, which is accelerating the transition of
             this technique to applications. This paper reviews recent
             progress in obtaining large optically-controllable
             slow-light delays. © 2007 Optical Society of
             America.},
   Key = {fds246255}
}

@article{fds246256,
   Author = {Dawes, AMC and Gauthier, DJ},
   Title = {Using transverse patterns for all-optical
             switching},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2007},
   Month = {January},
   Abstract = {We observe that a transverse optical pattern changes
             orientation in the presence of an ultra-low-light-level
             beam. This switch displays transistor-like behavior. © 2007
             Optical Society of America.},
   Key = {fds246256}
}

@article{fds246257,
   Author = {Shi, Z and Boyd, RW and Gauthier, DJ and Dudley, CC},
   Title = {Enhancing the spectral sensitivity and resolution of
             interferometers using slow-light media},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2007},
   Month = {January},
   Abstract = {We demonstrate experimentally that the spectral sensitivity
             and resolution of an interferometer can be greatly enhanced
             by introducing a slow-light medium into it with an
             enhancement factor equal to the group index of the medium.
             © 2006 Optical Society of America.},
   Key = {fds246257}
}

@article{fds246258,
   Author = {Zhang, B and Fazal, I and Yan, LS and Zhang, L and A Willner and E and Zhu, Z and Gauthier, DJ},
   Title = {System performance of DPSK signals transmitted through
             broadband SBS-based slow light element and reduction of
             slow-light-induced data-pattern dependence},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2007},
   Month = {January},
   Abstract = {We demonstrate 42 ps delay on 10.7-Gb/s DPSK signals via
             SBS-based slow light. Slow-light-induced DPSK-data-pattern
             dependence is analyzed and its reduction results in 3-dB Q
             factor improvement. NRZ-DPSK and RZ-DPSK system performances
             are compared. © 2007 Optical Society of
             America.},
   Key = {fds246258}
}

@article{fds246259,
   Author = {Shin, H and Schweinsberg, A and Gehring, G and Schwertz, K and Chang,
             HJ and Park, QH and Gauthier, DJ and Boyd, RW},
   Title = {Pulse broadening or compression in fast-light pulse
             propagation through an erbium-doped fiber
             amplifier},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2007},
   Month = {January},
   Abstract = {Pulse broadening or compression in an Er 3+ -doped fiber
             amplifier is observed, and explained by gain recovery and
             pulse spectrum broadening effects. Maximal pulse advancement
             and minimal pulse distortion are obtained by optimizing
             these competing effects. © 2006 Optical Society of
             America.},
   Key = {fds246259}
}

@article{fds246234,
   Author = {Gauthier, D},
   Title = {Slow light in room-temperature optical waveguides},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2007},
   ISSN = {2162-2701},
   Key = {fds246234}
}

@article{fds246333,
   Author = {Zhang, B and Fazal, I and Yan, L-S and Zhang, L and Willner, AE and Zhu, Z and Gauthier, DJ},
   Title = {System performance of DPSK signals transmitted through
             broadband SBS-based slow light element and reduction of
             slow-light-induced data-pattern dependence},
   Journal = {OFC/NFOEC 2007 - Optical Fiber Communication and the
             National Fiber Optic Engineers Conference
             2007},
   Year = {2007},
   url = {http://dx.doi.org/10.1109/OFC.2007.4348657},
   Abstract = {We demonstrate 42 ps delay on 10.7-Gb/s DPSK signals via
             SBS-based slow light. Slow-light-induced DPSK-data-pattern
             dependence is analyzed and its reduction results in 3-dB Q
             factor improvement. NRZ-DPSK and RZ-DPSK system performances
             are compared. © 2007 Optical Society of
             America.},
   Doi = {10.1109/OFC.2007.4348657},
   Key = {fds246333}
}

@article{fds246334,
   Author = {Gauthier, D},
   Title = {Slow light in room-temperature optical waveguides},
   Journal = {Conference on Lasers and Electro-Optics Europe - Technical
             Digest},
   Year = {2007},
   url = {http://dx.doi.org/10.1109/CLEOE-IQEC.2007.4386826},
   Doi = {10.1109/CLEOE-IQEC.2007.4386826},
   Key = {fds246334}
}

@article{fds246335,
   Author = {Shin, H and Schweinsberg, A and Gehring, G and Schwertz, K and Hye, JC and Park, Q-H and Gauthier, DJ and Boyd, RW},
   Title = {Pulse broadening or compression in fast-light pulse
             propagation through an erbium-doped fiber
             amplifier},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Year = {2007},
   url = {http://dx.doi.org/10.1109/QELS.2007.4431754},
   Abstract = {Pulse broadening or compression in an Er3+-doped fiber
             amplifier is observed, and explained by gain recovery and
             pulse spectrum broadening effects. Maximal pulse advancement
             and minimal pulse distortion are obtained by optimizing
             these competing effects. © 2006 Optical Society of
             America.},
   Doi = {10.1109/QELS.2007.4431754},
   Key = {fds246335}
}

@article{fds246336,
   Author = {Shi, Z and Boyd, RW and Gauthier, DJ and Dudley, CC},
   Title = {Enhancing the spectral sensitivity and resolution of
             interferometers using slow-light media},
   Journal = {Conference on Lasers and Electro-Optics, 2007, CLEO
             2007},
   Year = {2007},
   url = {http://dx.doi.org/10.1109/CLEO.2007.4453082},
   Abstract = {We demonstrate experimentally that the spectral sensitivity
             and resolution of an interferometer can be greatly enhanced
             by introducing a slow-light medium into it with an
             enhancement factor equal to the group index of the medium.
             © 2006 Optical Society of America.},
   Doi = {10.1109/CLEO.2007.4453082},
   Key = {fds246336}
}

@article{fds246337,
   Author = {Illing, L and Gauthier, DJ and Roy, R},
   Title = {Controlling optical chaos, spatio-temporal dynamics, and
             patterns},
   Journal = {Advances in Atomic, Molecular and Optical
             Physics},
   Volume = {54},
   Number = {C},
   Pages = {615-697},
   Booktitle = {in Advanced in Atomic, Molecular, and Optical Physics (an
             invited chapter)},
   Publisher = {Elsevier},
   Editor = {P.R Berman and E. Arimondo and C. Lin},
   Year = {2007},
   ISSN = {1049-250X},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/AdvancesAMO54_615_2007.pdf},
   Abstract = {We describe how small perturbations applied to optical
             systems can be used to suppress or control optical chaos,
             spatio-temporal dynamics, and patterns. This research
             highlights the fact that complex behavior, such as chaos,
             has a beautiful and orderly underlying structure. We
             demonstrate that this orderly structure can be exploited for
             a variety of applications, such as stabilizing laser
             behavior in a regime where the device would normally produce
             erratic behavior, communicating information masked in a
             seemingly noise-like chaotic carrier, and improving the
             sensitivity of ultra-low-light level optical switches. ©
             2007 Elsevier Inc.},
   Doi = {10.1016/S1049-250X(06)54010-8},
   Key = {fds246337}
}

@article{fds246338,
   Author = {Gauthier, DJ},
   Title = {Optical communications: Solitons go slow},
   Journal = {Nature Photonics},
   Volume = {1},
   Number = {2},
   Pages = {92-93},
   Year = {2007},
   ISSN = {1749-4885},
   url = {http://dx.doi.org/10.1038/nphoton.2006.91},
   Doi = {10.1038/nphoton.2006.91},
   Key = {fds246338}
}

@article{fds246339,
   Author = {Ward, P and Gauthier, DJ and Boyd, RW},
   Title = {Speed of light [3]},
   Journal = {Photonics spectra},
   Volume = {41},
   Number = {4},
   Pages = {12-},
   Year = {2007},
   ISSN = {0731-1230},
   Key = {fds246339}
}

@article{fds246340,
   Author = {Aleksić, NB and Skarka, V and Timotijević, DV and Gauthier,
             D},
   Title = {Self-stabilized spatiotemporal dynamics of dissipative light
             bullets generated from inputs without spherical symmetry in
             three-dimensional Ginzburg-Landau systems},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {75},
   Number = {6},
   Year = {2007},
   ISSN = {1050-2947},
   url = {http://dx.doi.org/10.1103/PhysRevA.75.061802},
   Abstract = {In order to meet experimental conditions, the generation,
             evolution, and self-stabilization of optical dissipative
             light bullets from non-spherically-symmetric input pulses is
             studied. Steady-state solutions of the (3+1) -dimensional
             complex cubic-quintic Ginzburg-Landau equation are computed
             using the variational approach with a trial function
             asymmetric with respect to three transverse coordinates. The
             analytical stability criterion is extended to systems
             without spherical symmetry, allowing determination of the
             domain of dissipative parameters for stable solitonic
             solutions. The analytical predictions are confirmed by
             numerical evolution of the asymmetric input pulses toward
             stable dissipative light bullets. Once established, the
             dissipative light bullet remains surprisingly robust. ©
             2007 The American Physical Society.},
   Doi = {10.1103/PhysRevA.75.061802},
   Key = {fds246340}
}

@article{fds246416,
   Author = {Zhu, Z and Gauthier, DJ and Boyd, RW},
   Title = {Stored light in an optical fiber via stimulated brillouin
             scattering},
   Journal = {Science},
   Volume = {318},
   Number = {5857},
   Pages = {1748-1750},
   Year = {2007},
   ISSN = {0036-8075},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/18079395},
   Abstract = {We describe a method for storing sequences of optical data
             pulses by converting them into long-lived acoustic
             excitations in an optical fiber through the process of
             stimulated Brillouin scattering. These stored pulses can be
             retrieved later, after a time interval limited by the
             lifetime of the acoustic excitation. In the experiment
             reported here, smooth 2-nanosecond-long pulses are stored
             for up to 12 nanoseconds with good readout efficiency: 29%
             at 4-nanosecond storage time and 2% at 12 nanoseconds. This
             method thus can potentially store data packets that are many
             bits long. It can be implemented at any wavelength where the
             fiber is transparent and can be incorporated into existing
             telecommunication networks because it operates using only
             commercially available components at room
             temperature.},
   Doi = {10.1126/science.1149066},
   Key = {fds246416}
}

@article{fds246418,
   Author = {Pant, R and Stenner, MD and Neifeld, MA and Shi, Z and Boyd, RW and Gauthier, DJ},
   Title = {Maximizing the opening of eye diagrams for slow-light
             systems},
   Journal = {Applied Optics},
   Volume = {46},
   Number = {26},
   Pages = {6513-6519},
   Year = {2007},
   ISSN = {1559-128X},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/ApplOpt46_6513_2007.pdf},
   Abstract = {We present a data-fidelity metric for quantifying distortion
             in slow-light optical pulse delay devices. We demonstrate
             the utility of this metric by applying it to the performance
             optimization of gain-based slow-light delay systems for
             Gaussian and super-Gaussian pulses. Symmetric Lorentzian
             double-line and triple-line gain systems are optimized and
             achieve maximum delay of 1.5 and 1.7 times the single-line
             gain system delay, respectively. The resulting double-line
             gain system design is qualitatively similar to the
             double-line gain system designed with a previous metric, but
             is tuned specifically to constrain data fidelity. © 2007
             Optical Society of America.},
   Doi = {10.1364/AO.46.006513},
   Key = {fds246418}
}

@article{fds246420,
   Author = {Shi, Z and Pant, R and Zhu, Z and Stenner, MD and Neifeld, MA and Gauthier,
             DJ and Boyd, RW},
   Title = {Design of a tunable time-delay element using multiple gain
             lines for increased fractional delay with high data
             fidelity},
   Journal = {Optics Letters},
   Volume = {32},
   Number = {14},
   Pages = {1986-1988},
   Year = {2007},
   ISSN = {0146-9592},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OptLett32_1986_2007.pdf},
   Abstract = {A slow-light medium based on multiple, closely spaced gain
             lines is studied. The spacings and relative strengths of the
             gain lines are optimized by using the criteria of gain
             penalty and eye-opening penalty to maximize the fractional
             delay defined in terms of the best decision time for random
             pulse trains. Both numerical calculations and experiments
             show that an optimal design of a triple-gain-line medium can
             achieve a maximal fractional delay about twice that which
             can be obtained with a single-gain-line medium, at three
             times higher modulation bandwidth, while high data fidelity
             is still maintained. © 2007 Optical Society of
             America.},
   Doi = {10.1364/OL.32.001986},
   Key = {fds246420}
}

@article{fds246422,
   Author = {Zhimin, S and Boyd, RW and Gauthier, DJ and Dudley,
             CC},
   Title = {Enhancing the spectral sensitivity of interferometers using
             slow-light media},
   Journal = {Optics Letters},
   Volume = {32},
   Number = {8},
   Pages = {915-917},
   Year = {2007},
   ISSN = {0146-9592},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OptLett32_915_2007.pdf},
   Abstract = {We demonstrate experimentally that the spectral sensitivity
             of an interferometer can be greatly enhanced by introducing
             a slow-light medium into it. The experimental results agree
             very well with theoretical predictions that the enhancement
             factor of the spectral sensitivity is equal to the group
             index ng of the slow-light medium. © 2007 Optical Society
             of America.},
   Doi = {10.1364/OL.32.000915},
   Key = {fds246422}
}

@article{fds246423,
   Author = {Shin, H and Schweinsberg, A and Gehring, G and Schwertz, K and Chang,
             HJ and Boyd, RW and Park, Q-H and Gauthier, DJ},
   Title = {Reducing pulse distortion in fast-light pulse propagation
             through an erbium-doped fiber amplifier},
   Journal = {Optics Letters},
   Volume = {32},
   Number = {8},
   Pages = {906-908},
   Year = {2007},
   ISSN = {0146-9592},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OptLett32_906_2007.pdf},
   Abstract = {When a pulse superposed on a cw background propagates
             through an erbium-doped fiber amplifier with a negative
             group velocity, either pulse broadening or pulse compression
             can be observed. These effects can be explained in terms of
             two competing mechanisms: gain recovery and pulse spectrum
             broadening. The distortion of the pulse shape caused by
             these effects depends on input pulse width, pump power, and
             background-to-pulse power ratio. With the proper choice of
             these three parameters, we can obtain significant pulse
             advancement with minimal pulse distortion. © 2007 Optical
             Society of America.},
   Doi = {10.1364/OL.32.000906},
   Key = {fds246423}
}

@article{fds246426,
   Author = {Zhu, Z and Dawes, AMC and Gauthier, DJ and Zhang, L and Willner,
             AE},
   Title = {Broadband SBS slow light in an optical fiber},
   Journal = {Journal of Lightwave Technology},
   Volume = {25},
   Number = {1},
   Pages = {201-206},
   Year = {2007},
   ISSN = {0733-8724},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/JLT25_201_2007.pdf},
   Abstract = {In this paper, we investigate slow light via stimulated
             Brillouin scattering (SBS) in a room temperature optical
             fiber that is pumped by a spectrally broadened laser.
             Broadening the spectrum of the pump field increases the
             linewidth Δωp of the Stokes amplifying resonance, thereby
             increasing the slow-light bandwidth. One physical bandwidth
             limitation occurs when the linewidth becomes several times
             larger than the Brillouin frequency shift ΩB so that the
             anti-Stokes absorbing resonance substantially cancels out
             the Stokes amplifying resonance and, hence, the slow-light
             effect. We find that partial overlap of the Stokes and
             anti-Stokes resonances can actually lead to an enhancement
             of the slow-light delay-bandwidth product when Δωp ≃
             1.3ΩB. Using this general approach, we increase the
             Brillouin slow-light bandwidth to over 12 GHz from its
             nominal linewidth of ∼ 30 MHz obtained for monochromatic
             pumping. We controllably delay 75-ps-long pulses by up to 47
             ps and study the data-pattern dependence of the broadband
             SBS slow-light system. © 2007 IEEE.},
   Doi = {10.1109/JLT.2006.887188},
   Key = {fds246426}
}

@article{fds246427,
   Author = {Gauthier, DJ and Boyd, RW},
   Title = {Fast light, slow light and optical precursors: What does it
             all mean?},
   Journal = {Photonics spectra},
   Volume = {41},
   Number = {1},
   Pages = {82-84+86-88+90},
   Year = {2007},
   ISSN = {0731-1230},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PhotonicsSpectraFastLightSlowLight2007.pdf},
   Abstract = {Einstein's special theory of relativity concerns the
             behavior of Maxwell's equations under coordinate
             transformations and has far-reaching consequences. In his
             public discussions of the theory, Einstein focuses on the
             concept of an "event," such as a spark caused by a lightning
             bolt and on how the event would be observed by people at
             various locations. Experiments conducted to date concerning
             how light travels are consistent with the special theory of
             relativity, although it remains difficult to show this. In
             some experiments, the pulse shape is such that it is
             exceedingly difficult to detect the pulse front and, hence,
             it may appear that the special theory has been violated. In
             other experiments especially designed to accentuate the
             pulse front, it has been shown that the information velocity
             is equal to c within the experimental uncertainties in both
             fast- and slow-light regimes.},
   Key = {fds246427}
}

@article{fds246429,
   Author = {Zhang, B and Yan, L and Fazal, I and Zhang, L and Willner, AE and Zhu, Z and Gauthier, DJ},
   Title = {Slow light on Gbit/s differential-phase-shift-keying
             signals},
   Journal = {Optics express},
   Volume = {15},
   Number = {4},
   Pages = {1878-1883},
   Year = {2007},
   ISSN = {1094-4087},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OptExpress15_1878_2007.pdf},
   Abstract = {We demonstrate, via simulation and experiment, slowing down
             of a phase-modulated optical signal. A 10.7-Gb/s NRZ-DPSK
             signal can be delayed by as much as 42 ps while still
             achieving error free via broadband SBS-based slow light. We
             further analyze the impact of slow-light-induced
             data-pattern dependence on both constructive and destructive
             demodulated ports. By detuning the SBS gain profile, we
             achieve 3-dB Q-factor improvement by the reduction of
             pattern dependence. Performance comparison between NRZ-DPSK
             and RZ-DPSK shows that robustness to slow-light-induced
             pattern dependence is modulation format dependent. © 2007
             Optical Society of America.},
   Doi = {10.1364/OE.15.001878},
   Key = {fds246429}
}

@article{fds246432,
   Author = {Illing, L and Gauthier, DJ},
   Title = {Ultra-high-frequency chaos in a time-delay electronic device
             with band-limited feedback.},
   Journal = {Chaos},
   Volume = {16},
   Number = {3},
   Pages = {033119},
   Year = {2006},
   Month = {September},
   ISSN = {1054-1500},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/17014224},
   Abstract = {We report an experimental study of ultra-high-frequency
             chaotic dynamics generated in a delay-dynamical electronic
             device. It consists of a transistor-based nonlinearity,
             commercially-available amplifiers, and a transmission-line
             for feedback. The feedback is band-limited, allowing tuning
             of the characteristic time-scales of both the periodic and
             high-dimensional chaotic oscillations that can be generated
             with the device. As an example, periodic oscillations
             ranging from 48 to 913 MHz are demonstrated. We develop a
             model and use it to compare the experimentally observed Hopf
             bifurcation of the steady-state to existing theory [Illing
             and Gauthier, Physica D 210, 180 (2005)]. We find good
             quantitative agreement of the predicted and the measured
             bifurcation threshold, bifurcation type and oscillation
             frequency. Numerical integration of the model yields
             quasiperiodic and high dimensional chaotic solutions
             (Lyapunov dimension approximately 13), which match
             qualitatively the observed device dynamics.},
   Doi = {10.1063/1.2335814},
   Key = {fds246432}
}

@article{fds246433,
   Author = {Zhu, Z and Gauthier, DJ},
   Title = {Nearly transparent SBS slow light in an optical
             fiber.},
   Journal = {Optics express},
   Volume = {14},
   Number = {16},
   Pages = {7238-7245},
   Year = {2006},
   Month = {August},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/19529093},
   Abstract = {Slow-light delay via stimulated Brillouin scattering (SBS)
             in optical fibers is usually achieved with delay-dependent
             amplification that degrades system performance. To address
             this problem, we propose a SBS slow-light method that makes
             use of two widely separated anti-Stokes absorption
             resonances, and achieve nearly transparent slow light in an
             optical fiber. We demonstrate the method in a highly
             nonlinear optical fiber, and achieve a slow-light bandwidth
             of approximately 150 MHz and a relative of delay of
             approximately 0.3 for approximately 9-ns pulses with a
             signal attenuation of approximately 4.8 dB.},
   Key = {fds246433}
}

@article{fds246436,
   Author = {Jeong, H and Dawes, AMC and Gauthier, DJ},
   Title = {Direct observation of optical precursors in a region of
             anomalous dispersion.},
   Journal = {Physical Review Letters},
   Volume = {96},
   Number = {14},
   Pages = {143901},
   Year = {2006},
   Month = {April},
   ISSN = {0031-9007},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/16712074},
   Abstract = {We create optical precursors by propagating a step-modulated
             optical pulse through a linear resonant dielectric absorber.
             The field emerging from the dielectric consists of a
             several-nanosecond-long spike with near 100% transmission,
             which decays to a constant value expected from Beer's law.
             This high-transmission spike might be useful for imaging
             applications requiring penetrating optical radiation. We
             compare our observations to two different theories,
             revealing that the spike consists of both the Sommerfeld and
             Brillouin precursors.},
   Doi = {10.1103/PhysRevLett.96.143901},
   Key = {fds246436}
}

@article{fds246248,
   Author = {Shi, Z and Boyd, RW and Gauthier, DJ},
   Title = {Spectroscopic interferometry using slow-light
             media},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2006},
   Month = {January},
   Abstract = {We consider a Mach-Zehnder interferometer with a slow-light
             medium in one of its arms. We show that the
             frequency/wavelength sensitivity is enhanced enormously
             because of the large difference in group indices between the
             two arms. © 2006 Optical Society of America.},
   Key = {fds246248}
}

@article{fds246249,
   Author = {Zhu, Z and Gauthier, DJ},
   Title = {XPM-induced pulse delay and advancement in optical
             fiber},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2006},
   Month = {January},
   Abstract = {Cross-phase-modulation-induced pulse delay or advancement in
             an optical fiber is analyzed. It is shown that XPM and
             group-velocity mismatch can lead to controllable pulse delay
             or advancement with negligible frequency shift. © 2005
             Optical Society of America.},
   Key = {fds246249}
}

@article{fds246251,
   Author = {Zhu, Z and Dawes, AMC and Gauthier, DJ and Stenner, MD and Neifeld, MA and Luo, T and Yu, C and Zhang, L and Willner, AE},
   Title = {Recent advances in stimulated brillouin scattering slow
             light},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2006},
   Month = {January},
   Abstract = {We will discuss progress in achieving long, low-distortion
             and wide-bandwidth pulse delay via stimulated Brillouin
             scattering slow light. The technique works at
             telecommunication wavelength and uses off-the-shelf
             components. © 2006 Optical Society of America.},
   Key = {fds246251}
}

@article{fds246252,
   Author = {Shi, Z and Boyd, RW and Zhu, Z and Gauthier, DJ and Pant, R and Stenner,
             MD and Neifeld, MA},
   Title = {Distortion-reduced pulse-train propagation with large delay
             in a triple gain media},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2006},
   Month = {January},
   Abstract = {A slow light medium based on three closely spaced gain lines
             is studied. Both numerical calculations and experiments
             demonstrate that large delay can be achieved with large
             bandwidth and with very small distortion. © 2006 Optical
             Society of America.},
   Key = {fds246252}
}

@article{fds246253,
   Author = {Zhu, Z and Gauthier, DJ and Okawachi, Y and Gaeta, AL and Schweinsberg,
             A and Boyd, RW},
   Title = {Numerical study of slow light via stimulated Brillouin
             scattering in optical fibers},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2006},
   Month = {January},
   Abstract = {We study numerically Stokes pulse propagation in a
             continuous-wave-pumped Brillouin fiber amplifier. Time delay
             and pulse broadening of the Stokes pulse are studied in the
             small-signal and saturation regimes. © 2005 Optical Society
             of America.},
   Key = {fds246253}
}

@article{fds246254,
   Author = {Gauthier, DJ and Zhu, Z and Dawes, AMC and Zhang, L and Willner,
             AE},
   Title = {Optimizing broadband SBS slow light in an optical
             fiber},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2006},
   Month = {January},
   Abstract = {We describe how to optimize slow-light via stimulated
             Brillouin scattering in a room temperature optical fiber
             that is pumped with a spectrally broadened laser. Our recent
             experimental results on broadband SBS slow-light will be
             discussed. © 2006 Optical Society of America.},
   Key = {fds246254}
}

@article{fds311266,
   Author = {Okawachi, Y and Sharping, JE and Gaeta, AL and Bigelow, MS and Schweinsberg, A and Boyd, RW and Zhu, Z and Gauthier,
             DJ},
   Title = {Tunable all-optical delays via brillouin slow light in an
             optical fiber},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2006},
   Month = {January},
   Abstract = {We demonstrate a technique for generating tunable
             all-optical delays as long as 20 ns in single-mode fibers at
             telecommunication wavelengths using stimulated Brillouin
             scattering. This process represents a step towards
             implementing slow-light in telecommunication systems. ©
             2005 Optical Society of America.},
   Key = {fds311266}
}

@article{fds246327,
   Author = {Zhu, Z and Dawes, AMC and Gauthier, DJ and Zhang, L and Willner,
             AE},
   Title = {12-GHz-bandwidth SBS slow light in optical
             fibers},
   Journal = {2006 Optical Fiber Communication Conference, and the 2006
             National Fiber Optic Engineers Conference},
   Volume = {2006},
   Year = {2006},
   Abstract = {We increased the bandwidth of SBS slow light in an optical
             fiber to 12.6 GHz. We delayed 75-ps pulses by up to 47 ps
             and studied the data pattern dependence of the broadband SBS
             slow-light system. © 2006 Optical Society of
             America.},
   Key = {fds246327}
}

@article{fds246328,
   Author = {Zhu, Z and Dawes, AMC and Gauthier, DJ},
   Title = {Slow light via stimulated Brillouin scattering in optical
             fibers},
   Journal = {LEOS Summer Topical Meeting},
   Pages = {38-39},
   Year = {2006},
   ISSN = {1099-4742},
   url = {http://dx.doi.org/10.1109/LEOSST.2004.1338669},
   Abstract = {Optical-fiber-based slow-light techniques are reviewed. Slow
             light via stimulated Brillouin scattering (SBS) in optical
             fibers is discussed and recent progress in achieving
             broadband SBS slow light for high data-rate systems is
             presented. © 2006 IEEE.},
   Doi = {10.1109/LEOSST.2004.1338669},
   Key = {fds246328}
}

@article{fds246329,
   Author = {Dawes, AMC and Zhu, Z and Gauthier, DJ},
   Title = {Improving the bandwidth of SBS-based slow-light
             delay},
   Journal = {Conference on Lasers and Electro-Optics and 2006 Quantum
             Electronics and Laser Science Conference, CLEO/QELS
             2006},
   Year = {2006},
   url = {http://dx.doi.org/10.1109/CLEO.2006.4628099},
   Abstract = {Frequency modulating the pump laser in SBS slow-light delay
             systems increases the effective Brillouin bandwidth by
             nearly two orders of magnitude, making the fiber Brillouin
             amplifier technique applicable to all-optical controllable
             delay of Gb/s data. © 2006 Optical Society of
             America.},
   Doi = {10.1109/CLEO.2006.4628099},
   Key = {fds246329}
}

@article{fds246330,
   Author = {Zhu, Z and Gauthier, DJ},
   Title = {XPM-induced pulse delay and advancement in optical
             fiber},
   Journal = {Conference on Lasers and Electro-Optics and 2006 Quantum
             Electronics and Laser Science Conference, CLEO/QELS
             2006},
   Year = {2006},
   url = {http://dx.doi.org/10.1109/CLEO.2006.4628520},
   Abstract = {Cross-phase-modulation-induced pulse delay or advancement in
             an optical fiber is analyzed. It is shown that XPM and
             group-velocity mismatch can lead to controllable pulse delay
             or advancement with negligible frequency shift. © 2005
             Optical Society of America.},
   Doi = {10.1109/CLEO.2006.4628520},
   Key = {fds246330}
}

@article{fds246332,
   Author = {Boyd, RW and Gauthier, DJ},
   Title = {Photonics: Transparency on an optical chip},
   Journal = {Nature},
   Volume = {441},
   Number = {7094},
   Pages = {701-702},
   Year = {2006},
   ISSN = {0028-0836},
   url = {http://dx.doi.org/10.1038/441701a},
   Doi = {10.1038/441701a},
   Key = {fds246332}
}

@article{fds246430,
   Author = {Agarwal, GS and Dey, TN and Gauthier, DJ},
   Title = {Competition between electromagnetically induced transparency
             and Raman processes},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {74},
   Number = {4},
   Pages = {043805},
   Year = {2006},
   ISSN = {1050-2947},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PRA74_043805_2006.pdf},
   Abstract = {We present a theoretical formulation of the competition
             between electromagnetically induced transparency (EIT) and
             Raman processes. The latter become important when the medium
             can no longer be considered to be dilute. Unlike the
             standard formulation of EIT, we consider all fields applied
             and generated as interacting with both the transitions of
             the Î scheme. We solve the Maxwell equations for the net
             generated field using a fast-Fourier-transform technique and
             obtain predictions for the probe, control, and Raman fields.
             We show how the intensity of the probe field is depleted at
             higher atomic number densities due to the buildup of
             multiple Raman fields. Furthermore, we find that the
             generated fields and the input fields acquire oscillatory
             behavior as a function of the density of the medium due to
             dynamical coupling of the various Raman processes. © 2006
             The American Physical Society.},
   Doi = {10.1103/PhysRevA.74.043805},
   Key = {fds246430}
}

@article{fds246434,
   Author = {Boyd, RW and Gauthier, DJ},
   Title = {Transparency on an optical chip},
   Journal = {an invited article in Nature},
   Volume = {441},
   Pages = {701},
   Year = {2006},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/Nature441_701.pdf},
   Key = {fds246434}
}

@article{fds246435,
   Author = {Boyd, RW and Gauthier, DJ and Gaeta, AL},
   Title = {Applications of slow light in telecommunications},
   Journal = {an invited article in Optics and Photonics
             News},
   Volume = {7},
   Number = {4},
   Pages = {18},
   Year = {2006},
   ISSN = {1047-6938},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OPN_slow_light.pdf},
   Abstract = {Slow-light techniques hold great promise for application in
             many areas of modern photonics, including
             telecommunications. Good progress is being made in the
             development of new techniques for producing controllable
             time delays in optical waveguides based on slow-light
             methods. The proposed applications of slow light are for the
             progress of optical buffering. Numerical modeling shows that
             the performance of a switching network under high traffic
             conditions can be dramatically increased through the use of
             such buffering. The key parameter of interest for a
             slow-light delay line is normalized time delay. A key issue
             in all slow-light experiments is finding the maximum
             modulation bandwidth that can experience the full slow-light
             effect.},
   Key = {fds246435}
}

@article{fds246439,
   Author = {Gauthier, DJ and Gaeta, AL and Boyd, RW},
   Title = {Slow light: From basics to future prospects},
   Journal = {Photonics spectra},
   Volume = {40},
   Number = {3},
   Pages = {44-50},
   Year = {2006},
   ISSN = {0731-1230},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PhotonicsSpectraSlowLight2006.pdf},
   Abstract = {Motivated by the need for optically controllable pulse
             delays for applications such as optical buffering, data
             synchronization, optical memory and signal processing,
             researchers sought to control the speed of a pulse light
             from its vacuum speed. A revolution in the field came when
             researchers at Stanford University in California realized
             that the slow-light effect can be preserved while the
             effects of absortion are simultaneously canceled using a
             coherent optical effect occurring in a gas of atoms that
             have three energy levels. Although this result was
             impressive, it indicated that slow light based on
             electromagnetically induced transparency requires that the
             material medium be a low-density atomic vapor or an
             impurity-doped solid maintained at low temperature. A recent
             experiment performed at the University of Rochester in New
             York established that slow light based on coherent
             population oscillations could be observed with the use of
             ruby. A more recent research targeted the development of
             materials with a much faster population recovery. For
             instance, researchers at the University of California,
             Berkeley, and Texas A&M UNiversity in College Station
             observed slow light with a modulation bandwidth as large as
             2.8 GHz in a semicondictor laser amplifier. Controllable
             slow-light delays due to stimulated Brillouin scattering in
             conventional telecommunication fibers were realized
             independently by two teams, one from Spain and another from
             the US.},
   Key = {fds246439}
}

@article{fds304567,
   Author = {Boyd, RW and Gauthier, DJ and Gaeta, AL},
   Title = {Applications of slow light in telecommunications},
   Journal = {Optics & Photonics News},
   Volume = {17},
   Number = {4},
   Pages = {19-23},
   Year = {2006},
   ISSN = {1047-6938},
   Abstract = {Slow-light techniques hold great promise for application in
             many areas of modern photonics, including
             telecommunications. Good progress is being made in the
             development of new techniques for producing controllable
             time delays in optical waveguides based on slow-light
             methods. The proposed applications of slow light are for the
             progress of optical buffering. Numerical modeling shows that
             the performance of a switching network under high traffic
             conditions can be dramatically increased through the use of
             such buffering. The key parameter of interest for a
             slow-light delay line is normalized time delay. A key issue
             in all slow-light experiments is finding the maximum
             modulation bandwidth that can experience the full slow-light
             effect.},
   Key = {fds304567}
}

@article{fds246471,
   Author = {Kalb, SS and Tolkacheva, EG and Schaeffer, DG and Gauthier, DJ and Krassowska, W},
   Title = {Restitution in mapping models with an arbitrary amount of
             memory.},
   Journal = {Chaos},
   Volume = {15},
   Number = {2},
   Pages = {23701},
   Year = {2005},
   Month = {June},
   ISSN = {1054-1500},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/16035891},
   Abstract = {Restitution, the characteristic shortening of action
             potential duration (APD) with increased heart rate, has been
             studied extensively because of its purported link to the
             onset of fibrillation. Restitution is often represented in
             the form of mapping models where APD is a function of
             previous diastolic intervals (DIs) and/or APDs,
             A(n+1)=F(D(n),A(n),D(n-1),A(n-1),...), where A(n+1) is the
             APD following a DI given by D(n). The number of variables
             previous to D(n) determines the degree of memory in the
             mapping model. Recent experiments have shown that mapping
             models should contain at least three variables
             (D(n),A(n),D(n-1)) to reproduce a restitution portrait (RP)
             that is qualitatively similar to that seen experimentally,
             where the RP shows three different types of restitution
             curves (RCs) [dynamic, S1-S2, and constant-basic cycle
             length (BCL)] simultaneously. However, an interpretation of
             the different RCs has only been presented in detail for
             mapping models of one and two variables. Here we present an
             analysis of the different RCs in the RP for mapping models
             with an arbitrary amount of memory. We determine the number
             of variables necessary to represent the different RCs in the
             RP. We also present a graphical visualization of these RCs.
             Our analysis reveals that the dynamic and S1-S2 RCs reside
             on two-dimensional surfaces, and therefore provide limited
             information for mapping models with more than two variables.
             However, constant-BCL restitution is a feature of the RP
             that depends on higher dimensions and can possibly be used
             to determine a lower bound on the dimensionality of cardiac
             dynamics.},
   Doi = {10.1063/1.1876912},
   Key = {fds246471}
}

@article{fds246431,
   Author = {Stenner, MD and Gauthier, DJ and Neifeld, MA},
   Title = {Fast causal information transmission in a medium with a slow
             group velocity.},
   Journal = {Physical Review Letters},
   Volume = {94},
   Number = {5},
   Pages = {053902},
   Year = {2005},
   Month = {Spring},
   ISSN = {0031-9007},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/15783642},
   Abstract = {It is widely believed that the velocity of information
             upsiloni encoded on an optical pulse is equal to the group
             velocity upsilong, at least when upsilong is less than the
             speed of light in vacuum c. On the other hand, several
             authors suggest that upsiloni=c, although the size of the
             signal traveling at this velocity may be small, thereby
             making it difficult to measure. Here, we measure upsiloni
             for pulses propagating through a resonant "slow-light"
             medium where upsilong approximately 0.006c. We find
             upsiloni=1.03c(+0.49c)-0.25c, or that upsiloni approximately
             168upsilong, clearly demonstrating that the speed of
             information cannot be generally described by upsilong, but
             is characterized by its own velocity.},
   Doi = {10.1103/PhysRevLett.94.053902},
   Key = {fds246431}
}

@article{fds246225,
   Author = {Gaeta, AL and Okawachi, Y and Ghosh, S and Sharping, JE and Bigelow, MS and Schweinsberg, A and Boyd, RW and Zhu, Z and Gauthier,
             DJ},
   Title = {Optically tunable “slow“ light in waveguides},
   Journal = {Nonlinear Guided Waves and Their Applications, NLGW
             2005},
   Year = {2005},
   Month = {January},
   ISBN = {1557527911},
   Abstract = {We describe our recent research efforts to produce tunable,
             all-optical slow light by stimulated scattering in
             conventional optical fibers and via electromagnetically-induced
             transparency in photonic band-gap fibers. © 2005 Optical
             Society of America.},
   Key = {fds246225}
}

@article{fds246237,
   Author = {Gaeta, AL and Okawachi, Y and Ghosh, S and Sharping, JE and Bigelow, MS and Schweinsberg, A and Boyd, RW and Zhu, Z and Gauthier,
             DJ},
   Title = {Optically tunable "slow" light in waveguides},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2005},
   Month = {January},
   Abstract = {We describe our recent research efforts to produce tunable,
             all-optical slow light by stimulated scattering in
             conventional optical fibers and via electromagnetically-induced
             transparency in photonic band-gap fibers. © 2005 Optical
             Society of America.},
   Key = {fds246237}
}

@article{fds246242,
   Author = {Zhu, Z and Gauthier, DJ and Okawachi, Y and Gaeta, AL and Schweinsberg,
             A and Boyd, RW},
   Title = {Numerical study of slow light via stimulated brillouin
             scattering in optical fibers},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2005},
   Month = {January},
   Abstract = {We study numerically Stokes pulse propagation in a
             continuous-wave-pumped Brillouin fiber amplifier. Time delay
             and pulse broadening of the Stokes pulse are studied in the
             small-signal and saturation regimes. © 2005 Optical Society
             of America.},
   Key = {fds246242}
}

@article{fds246243,
   Author = {Jeong, H and Dawes, AMC and Gauthier, DJ},
   Title = {Observation of the sommerfeld precursor},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2005},
   Month = {January},
   Abstract = {We study the generation of optical precursors when a
             step-modulated optical pulse propagates through a linear
             resonant absorber. The Sommerfeld precursor is the dominant
             part of the transmitted field, and experiences essentially
             no absorption. © 2005 Optical Society of
             America.},
   Key = {fds246243}
}

@article{fds246244,
   Author = {Gauthier, DJ},
   Title = {Optical visualization of nonlinear pattern dynamics in
             biological systems},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2005},
   Month = {January},
   Abstract = {The development of voltage-sensitive and ion-specific
             organic dyes has revolutionized the visualization of complex
             spatio-temporal patterns in biological systems. I will
             review how these tools can be used to visual dynamics of the
             heart. © 2005 Optical Society of America.},
   Key = {fds246244}
}

@article{fds246245,
   Author = {Zhu, Z and Gauthier, DJ and Okawachi, Y and Gaeta, AL and Schweinsberg,
             A and Boyd, RW},
   Title = {Numerical study of slow light via stimulated Brillouin
             scattering in optical fibers},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2005},
   Month = {January},
   Abstract = {We study numerically Stokes pulse propagation in a
             continuous-wave-pumped Brillouin fiber amplifier. Time delay
             and pulse broadening of the Stokes pulse are studied in the
             small-signal and saturation regimes. © 2005 Optical Society
             of America.},
   Key = {fds246245}
}

@article{fds246246,
   Author = {Boyd, RW and Gauthier, DJ and Gaeta, AL and Willner,
             AE},
   Title = {Limits on the time delay induced by slow-light
             propagation},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2005},
   Month = {January},
   Abstract = {We show that there are no fundamental limits to the maximum
             time delay that can be achieved for pulses propagating
             through slow-light media, thus suggesting the importance of
             slowlight methods for practical applications. © 2005
             Optical Society of America.},
   Key = {fds246246}
}

@article{fds311316,
   Author = {Okawachi, Y and Sharping, JE and Gaeta, AL and Bigelow, MS and Schweinsberg, A and Boyd, RW and Zhu, Z and Gauthier,
             DJ},
   Title = {Tunable all-optical delays via brillouin slow light in an
             optical fiber},
   Journal = {Optics InfoBase Conference Papers},
   Year = {2005},
   Month = {January},
   Abstract = {We demonstrate a technique for generating tunable
             all-optical delays as long as 20 ns in single-mode fibers at
             telecommunication wavelengths using stimulated Brillouin
             scattering. This process represents a step towards
             implementing slow-light in telecommunication systems. ©
             2005 Optical Society of America.},
   Key = {fds311316}
}

@article{fds44142,
   Author = {L. Illing and D.J. Gauthier},
   Title = {Hopf bifurcations in time-delay systems with band-limited
             feedback},
   Journal = {Physica D: Nonlinear Phenomena},
   Volume = {210},
   Pages = {180},
   Year = {2005},
   url = {http://arxiv.org/abs/nlin/0507040},
   Key = {fds44142}
}

@article{fds52845,
   Author = {L. Illing and J. N. Blakely and D. Gauthier},
   Title = {Time delay systems with band-limited feedback},
   Pages = {1115-1123},
   Booktitle = {proceedings of the Fifth EUROMECH Nonlinear Dynamics
             Conference (ENOC-2005), Eindhoven, The Netherlands, August
             7--12},
   Editor = {D.H. Van Campen and M.D. Lazurko W.P.J.M. Van Der
             Oever},
   Year = {2005},
   Key = {fds52845}
}

@article{fds246319,
   Author = {Dawes, AMC and Clark, SM and Illing, L and Gauthier,
             DJ},
   Title = {Observation of ultra-low-light-level all-optical
             switching},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {5735},
   Pages = {60-68},
   Booktitle = {Proc. SPIE},
   Editor = {H. J. Coufal and Z. U. Hasan and A. E. Craig},
   Year = {2005},
   ISSN = {0277-786X},
   url = {http://dx.doi.org/10.1117/12.601704},
   Abstract = {Photonic circuits require elements that can control optical
             signals with other optical signals. Ultra-low-light-level
             operation of all-optical switches opens the possibility of
             photonic devices that operate in the single-quantum regime,
             a prerequisite for quantum-photonic devices. We describe a
             new type of all-optical switch that exploits the extreme
             sensitivity to small perturbations displayed by
             instability-generated dissipative optical patterns. Such
             patterns, when controlled by applied perturbations, enable
             control of microwatt-power-level output beams by an input
             beam that is over 600 times weaker. In comparison,
             essentially all experimental realizations of light-by-light
             switching have been limited to controlling weak beams with
             beams of either comparable or higher power, thus limiting
             their implementation in cascaded switching networks or
             computation machines. Furthermore, current research suggests
             that the energy density required to actuate an all-optical
             switch is of the order of one photon per optical cross
             section. Our measured switching energy density of ∼4.4 ×
             10-2 photons per cross section suggests that our device can
             operate at the single-photon level with modest system
             improvement.},
   Doi = {10.1117/12.601704},
   Key = {fds246319}
}

@article{fds246321,
   Author = {Zhu, Z and Gauthier, DJ and Okawachi, Y and Gaeta, AL and Schweinsberg,
             A and Boyd, RW},
   Title = {Numerical study of slow light via stimulated Brillouin
             scattering in optical fibers},
   Journal = {Quantum Electronics and Laser Science Conference
             (QELS)},
   Volume = {2},
   Pages = {844-846},
   Year = {2005},
   Abstract = {We study numerically Stokes pulse propagation in a
             continuous-wave-pumped Brillouin fiber amplifier. Time delay
             and pulse broadening of the Stokes pulse are studied in the
             small-signal and saturation regimes. ©2005 Optical Society
             of America.},
   Key = {fds246321}
}

@article{fds246324,
   Author = {Boyd, RW and Gauthier, DJ and Gaeta, AL and Willner,
             AE},
   Title = {Erratum: Maximum time delay achievable on propagation
             through a slow-light medium (Physical Review A - Atomic,
             Molecular, and Optical Physics (2005) 71
             (023801))},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {72},
   Number = {5},
   Year = {2005},
   ISSN = {1050-2947},
   url = {http://dx.doi.org/10.1103/PhysRevA.72.059903},
   Doi = {10.1103/PhysRevA.72.059903},
   Key = {fds246324}
}

@article{fds246325,
   Author = {Dawes, AMC and Illing, L and Clark, SM and Gauthier,
             DJ},
   Title = {All-optical switch controls strong beams with weak
             ones},
   Journal = {Optics & Photonics News},
   Volume = {16},
   Number = {12 SPEC. ISS.},
   Pages = {34-},
   Year = {2005},
   ISSN = {1047-6938},
   url = {http://dx.doi.org/10.1364/OPN.16.12.000034},
   Abstract = {Switches that are capable of redirecting pulses of light are
             important components of high speed optical communication
             networks. These devices help an incoming switching beam to
             redirect other beams via light-by-light scattering. Another
             desirable property property of all optical switches is that
             the output beams are controlled by a weaker switch beam.
             current switches however tend to control a weak beams with a
             strong one.},
   Doi = {10.1364/OPN.16.12.000034},
   Key = {fds246325}
}

@article{fds246326,
   Author = {Okawachi, Y and Sharping, JE and Gaeta, AL and Bigelow, MS and Schweinsberg, A and Boyd, RW and Zhu, Z and Gauthier,
             DJ},
   Title = {All-optical tunable slow-light delays via stimulated
             scattering},
   Journal = {Optics & Photonics News},
   Volume = {16},
   Number = {12 SPEC. ISS.},
   Pages = {42-},
   Year = {2005},
   ISSN = {1047-6938},
   url = {http://dx.doi.org/10.1364/OPN.16.12.000042},
   Abstract = {In systems operating at ultrahigh speeds, where information
             is encoded with pulses of light, optical devices that
             eliminate the need for optical/electronic conversion of the
             information should be used. A new type of optical pulse
             delay scheme based on stimulated scattering that represents
             an important advance in flexibility and performance is
             discussed. The use of stimulated scattering to produce
             tunable delays represents an important advance, given that
             off the shelf components can be used. The slow light
             resonance can be tuned to any wavelength, thus allowing for
             operation in the S-, C-, and L-band optical communication
             windows.},
   Doi = {10.1364/OPN.16.12.000042},
   Key = {fds246326}
}

@article{fds246370,
   Author = {Boyd, RW and Gauthier, DJ and Gaeta, AL and Willner,
             AE},
   Title = {Limits on the time delay induced by slow-light
             propagation},
   Journal = {Quantum Electronics and Laser Science Conference
             (QELS)},
   Volume = {1},
   Pages = {214-216},
   Year = {2005},
   Abstract = {We show that there are no fundamental limits to the maximum
             time delay that can be achieved for pulses propagating
             through slow-light media, thus suggesting the importance of
             slow-light methods for practical applications. © 2005
             Optical Society of America.},
   Key = {fds246370}
}

@article{fds246394,
   Author = {Boyd, RW and Gauthier, DJ and Gaeta, AL and Willner,
             AE},
   Title = {Maximum time delay achievable on propagation through a
             slow-light medium},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {71},
   Number = {2},
   Pages = {023801},
   Year = {2005},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PRA71023801.pdf},
   Abstract = {We consider the question of whether there are any
             fundamental limits to the maximum time delay that can be
             achieved for a pulse propagating through a slow-light
             medium. We include in our analysis what we consider to be
             the dominant competing effects, and we show that in
             principle they do not lead to a limitation on the maximum
             achievable time delay. From this result we conclude that,
             through optimization, one should be able to delay a pulse by
             very many pulse lengths; the ability to do so can have
             important implications for the use of slow-light methods for
             applications in photonics. © 2005 The American Physical
             Society.},
   Doi = {10.1103/PhysRevA.71.023801},
   Key = {fds246394}
}

@article{fds246437,
   Author = {Dawes, AMC and Illing, L and Clark, SM and Gauthier,
             DJ},
   Title = {Applied physics: All-optical switching in rubidium
             vapor},
   Journal = {Science},
   Volume = {308},
   Number = {5722},
   Pages = {672-674},
   Year = {2005},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/15860622},
   Abstract = {We report on an all-optical switch that operates at low
             light levels. It consists of laser beams counterpropagating
             through a warm rubidium vapor that induce an off-axis
             optical pattern. A switching laser beam causes this pattern
             to rotate even when the power in the switching beam is much
             lower than the power in the pattern. The observed switching
             energy density is very low, suggesting that the switch might
             operate at the single-photon level with system optimization.
             This approach opens the possibility of realizing a
             single-photon switch for quantum information networks and
             for improving transparent optical telecommunication
             networks.},
   Doi = {10.1126/science.1110151},
   Key = {fds246437}
}

@article{fds246443,
   Author = {Font, JL and Fernández-Soler, JJ and Vilaseca, R and Gauthier,
             DJ},
   Title = {Multiphoton lasing in atomic potassium: Steady-state and
             dynamic behavior},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {72},
   Number = {6},
   Pages = {063810},
   Year = {2005},
   url = {http://dx.doi.org/10.1103/PhysRevA.72.063810},
   Abstract = {We show theoretically that it is possible to generate laser
             light based on two-photon and other high-order multiphoton
             processes when an atomic beam of optically driven potassium
             atoms crosses a high-finesse optical cavity. We use a
             rigorous model that takes into account all the atomic
             substates involved in the optical interactions and is valid
             for any drive and lasing field intensities. The
             polarizations of the drive and lasing fields are assumed to
             be fixed. Stable and unstable laser emission branches are
             obtained, which are represented as a function of cavity
             detuning and are analyzed in terms of the fundamental
             quantum processes yielding them. Closed-curve laser-emission
             profiles are obtained for multiphoton lasing based on
             processes involving more than one lasing photon. Two-photon
             laser emission branches show relatively long segments of
             stationary emission, combined in general with some segments
             of nonstationary emission, or with segments of mixture with
             three-photon emission processes. Rayleigh and hyper-Rayleigh
             processes can become simultaneously resonant, entailing in
             such case a large and fast transfer of population from the
             atomic initial ground sublevel to other ground sublevels
             with different z components of the total angular momentum.
             They could be useful in generating multiphoton correlated
             field states. In all cases the largest laser emission
             intensities are obtained from the highest-order processes,
             rather than the lowest. These results open the way to the
             understanding of experiments performed in the past years and
             suggest possibilities for more efficient and varied types of
             multiphoton laser operation. © 2005 The American Physical
             Society.},
   Doi = {10.1103/PhysRevA.72.063810},
   Key = {fds246443}
}

@article{fds246444,
   Author = {Gauthier, D},
   Title = {Slow light brings faster communications},
   Journal = {Physics World},
   Volume = {18},
   Number = {12},
   Pages = {30-32},
   Year = {2005},
   ISSN = {0953-8585},
   Abstract = {Researchers have significantly managed to reduce the speed
             of light in an optical fibre, which could open the door to
             all-optical routers for telecommunication. Routers switch
             pulses of light from one fibre to another, ending up at the
             correct destination. Now they are converting optical into
             electrical pulses, perform the switching operation and then
             convert the electrical signals back into the optical pulse.
             The main difficulty in designing a all-optical router is to
             find a way to temporarily store or buffer the packets of
             information. A optical data regenerator device uses slow
             light to create a stream of optical data pulses that will be
             distorted after traveling a long distance along an optical
             fibre.},
   Key = {fds246444}
}

@article{fds246445,
   Author = {Stenner, MD and Neifeld, MA and Zhu, Z and Dawes, AMC and Gauthier,
             DJ},
   Title = {Distortion management in slow-light pulse
             delay},
   Journal = {Optics express},
   Volume = {13},
   Number = {25},
   Pages = {9995-10002},
   Year = {2005},
   ISSN = {1094-4087},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/OptExp13_9995.pdf},
   Abstract = {We describe a methodology to maximize slow-light pulse delay
             subject to a constraint on the allowable pulse distortion.
             We show that optimizing over a larger number of physical
             variables can increase the distortion-constrained delay. We
             demonstrate these concepts by comparing the optimum
             slow-light pulse delay achievable using a single Lorentzian
             gain line with that achievable using a pair of
             closely-spaced gain lines. We predict that distortion
             management using a gain doublet can provide approximately a
             factor of 2 increase in slow-light pulse delay as compared
             with the optimum single-line delay. Experimental results
             employing Brillouin gain in optical fiber confirm our
             theoretical predictions. © 2005 Optical Society of
             America.},
   Doi = {10.1364/OPEX.13.009995},
   Key = {fds246445}
}

@article{fds246446,
   Author = {Zhu, Z and Gauthier, DJ and Okawachi, Y and Sharping, JE and Gaeta, AL and Boyd, RW and Willner, AE},
   Title = {Numerical study of all-optical slow-light delays via
             stimulated Brillouin scattering in an optical
             fiber},
   Journal = {Journal of the Optical Society of America
             B},
   Volume = {22},
   Number = {11},
   Pages = {2378-2384},
   Year = {2005},
   ISSN = {0740-3224},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/JOSAB22_2378.pdf},
   Abstract = {We study numerically all-optical slow-light delays in
             room-temperature single-mode optical fibers induced by
             stimulated Brillouin scattering. We consider the propagation
             of a pulse through a cw-pumped Brillouin fiber amplifier,
             where the carrier frequency of the pulse is tuned near the
             Stokes resonance. Pulse delay and broadening of the Stokes
             pulse are studied in the small-signal and gain-saturation
             regimes. Pulse delay is shown to be limited by saturation of
             the Brillouin amplifier. In the small-signal regime, both
             time delay and pulse broadening increase with increasing
             gain. In the gain-saturation regime, both time delay and
             broadening decrease with increasing gain, and the pulse even
             achieves advancement. Time delay of more than one
             pulse-width is observed with modest pulse distortion, and
             over one pulse-width advancement can be obtained with larger
             pulse distortion in the gain-saturation regime. © 2005
             Optical Society of America.},
   Doi = {10.1364/JOSAB.22.002378},
   Key = {fds246446}
}

@article{fds246460,
   Author = {Okawachi, Y and Bigelow, MS and Sharping, JE and Zhu, Z and Schweinsberg, A and Gauthier, DJ and Boyd, RW and Gaeta,
             AL},
   Title = {Tunable all-optical delays via brillouin slow light in an
             optical fiber},
   Journal = {Physical Review Letters},
   Volume = {94},
   Number = {15},
   Pages = {511-513},
   Year = {2005},
   ISSN = {0031-9007},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PRL94_153902.pdf},
   Abstract = {We demonstrate a technique for generating tunable
             all-optical delays in room temperature single-mode optical
             fibers at telecommunication wavelengths using the stimulated
             Brillouin scattering process. This technique makes use of
             the rapid variation of the refractive index that occurs in
             the vicinity of the Brillouin gain feature. The wavelength
             at which the induced delay occurs is broadly tunable by
             controlling the wavelength of the laser pumping the process,
             and the magnitude of the delay can be tuned continuously by
             as much as 25 ns by adjusting the intensity of the pump
             field. The technique can be applied to pulses as short as 15
             ns. This scheme represents an important first step towards
             implementing slow-light techniques for various applications
             including buffering in telecommunication systems. © 2005
             The American Physical Society.},
   Doi = {10.1103/PhysRevLett.94.153902},
   Key = {fds246460}
}

@article{fds246470,
   Author = {Illing, L and Gauthier, DJ},
   Title = {Hopf bifurcations in time-delay systems with band-limited
             feedback},
   Journal = {Physica D: Nonlinear Phenomena},
   Volume = {210},
   Number = {3-4},
   Pages = {180-202},
   Year = {2005},
   url = {http://dx.doi.org/10.1016/j.physd.2005.07.008},
   Abstract = {We investigate the steady-state solution and its
             bifurcations in time-delay systems with band-limited
             feedback. This is a first step in a rigorous study
             concerning the effects of AC-coupled components in nonlinear
             devices with time-delayed feedback. We show that the steady
             state is globally stable for small feedback gain and that
             local stability is lost, generically, through a Hopf
             bifurcation for larger feedback gain. We provide simple
             criteria that determine whether the Hopf bifurcation is
             supercritical or subcritical based on the knowledge of the
             first three terms in the Taylor-expansion of the
             nonlinearity. Furthermore, the presence of double-Hopf
             bifurcations of the steady state is shown, which indicates
             possible quasiperiodic and chaotic dynamics in these
             systems. As a result of this investigation, we find that
             AC-coupling introduces fundamental differences to systems of
             Ikeda-type [K. Ikeda, K. Matsumoto, High-dimensional chaotic
             behavior in systems with time-delayed feedback, Physica D 29
             (1987) 223-235] already at the level of steady-state
             bifurcations, e.g. bifurcations exist in which limit cycles
             are created with periods other than the fundamental
             "period-2" mode found in Ikeda-type systems. © 2005
             Elsevier B.V. All rights reserved.},
   Doi = {10.1016/j.physd.2005.07.008},
   Key = {fds246470}
}

@article{fds311268,
   Author = {Okawachi, Y and Sharping, JE and Gaeta, AL and Bigelow, MS and Schweinsberg, A and Boyd, RW and Zhu, Z and Gauthier,
             DJ},
   Title = {Tunable all-optical delays via Brillouin slow light in an
             optical fiber},
   Journal = {2005 Conference on Lasers and Electro-Optics,
             CLEO},
   Volume = {1},
   Pages = {511-513},
   Year = {2005},
   Abstract = {We demonstrate a technique for generating tunable
             all-optical delays as long as 20 ns in single-mode fibers at
             telecommunication wavelengths using stimulated Brillouin
             scattering. This process represents a step towards
             implementing slow-light in telecommunication systems. ©
             2005 Optical Society of America.},
   Key = {fds311268}
}

@article{fds311267,
   Author = {Jeong, H and Dawes, AM and Gauthier, DJ},
   Title = {Direct observation of optical precursors in a region of
             anomalous dispersion},
   Journal = {Quantum Electronics and Laser Science Conference
             (QELS)},
   Volume = {1},
   Pages = {241-243},
   Year = {2005},
   ISSN = {2162-2701},
   Abstract = {We observe the creation of optical precursors when a
             step-modulated optical pulse propagates through a linear
             resonant absorber. The precursors are the dominant part of
             the transmitted field, displaying 100% transmission at their
             maximum amplitude. © 2005 Optical Society of
             America.},
   Key = {fds311267}
}

@article{fds246497,
   Author = {Cain, JW and Tolkacheva, EG and Schaeffer, DG and Gauthier,
             DJ},
   Title = {Rate-dependent propagation of cardiac action potentials in a
             one-dimensional fiber.},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {70},
   Number = {6 Pt 1},
   Pages = {061906},
   Year = {2004},
   Month = {December},
   ISSN = {1539-3755},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/15697401},
   Abstract = {Action potential duration (APD) restitution, which relates
             APD to the preceding diastolic interval (DI), is a useful
             tool for predicting the onset of abnormal cardiac rhythms.
             However, it is known that different pacing protocols lead to
             different APD restitution curves (RCs). This phenomenon,
             known as APD rate dependence, is a consequence of memory in
             the tissue. In addition to APD restitution, conduction
             velocity restitution also plays an important role in the
             spatiotemporal dynamics of cardiac tissue. We present
             results concerning rate-dependent restitution in the
             velocity of propagating action potentials in a
             one-dimensional fiber. Our numerical simulations show that,
             independent of the amount of memory in the tissue, the
             wave-back velocity exhibits pronounced rate dependence and
             the wave-front velocity does not. Moreover, the discrepancy
             between wave-back velocity RCs is most significant for a
             small DI. We provide an analytical explanation of these
             results, using a system of coupled maps to relate the
             wave-front and wave-back velocities. Our calculations show
             that rate-dependent wave-back velocity can be present even
             if neither APD nor wave-front velocity exhibits rate
             dependence.},
   Doi = {10.1103/PhysRevE.70.061906},
   Key = {fds246497}
}

@article{fds246498,
   Author = {Kalb, SS and Dobrovolny, HM and Tolkacheva, EG and Idriss, SF and Krassowska, W and Gauthier, DJ},
   Title = {The restitution portrait: a new method for investigating
             rate-dependent restitution.},
   Journal = {Journal of Cardiovascular Electrophysiology},
   Volume = {15},
   Number = {6},
   Pages = {698-709},
   Year = {2004},
   Month = {June},
   ISSN = {1045-3873},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/15175067},
   Abstract = {INTRODUCTION: Electrical restitution, relating action
             potential duration (APD) to diastolic interval (DI), was
             believed to determine the stability of heart rhythm.
             However, recent studies demonstrate that stability also
             depends on long-term APD changes caused by memory. This
             study presents a new method for investigation of rate- and
             memory-dependent aspects of restitution and for assessment
             of mapping models of APD. METHODS AND RESULTS: Bullfrog
             ventricular myocardium was paced with a "perturbed downsweep
             protocol." Starting from a basic cycle length (BCL) of 1,000
             ms, the tissue was paced until steady state was achieved,
             followed by single beats of longer and shorter cycle
             lengths. BCL was decreased by 50 to 100 ms and the process
             repeated. All APDs were plotted as a function of the
             preceding DI, which allowed simultaneous observation of
             dynamic, S1-S2, and two constant-BCL restitution curves in a
             "restitution portrait." Responses were classified as 1:1
             (stimulus:response), transient 2:2, or persistent 2:2
             (alternans) and were related to the slopes of the
             restitution curves. None of these slopes approached unity
             for the persistent 2:2 response, demonstrating that the
             traditional restitution condition does not predict
             alternans. The restitution portrait was used to evaluate
             three mapping models of APD. The models with no memory and
             with one-beat memory did not produce restitution portraits
             similar to the experimental one. A model with two-beat
             memory produced a qualitatively similar portrait.
             CONCLUSION: The restitution portrait allows a more
             comprehensive assessment of cardiac dynamics than methods
             used to date. Further study of models with memory may result
             in a clinical criterion for electrical instability.},
   Doi = {10.1046/j.1540-8167.2004.03550.x},
   Key = {fds246498}
}

@article{fds246499,
   Author = {Blakely, JN and Illing, L and Gauthier, DJ},
   Title = {Controlling fast chaos in delay dynamical
             systems.},
   Journal = {Physical Review Letters},
   Volume = {92},
   Number = {19},
   Pages = {193901},
   Year = {2004},
   Month = {May},
   ISSN = {0031-9007},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/15169402},
   Abstract = {We introduce a novel approach for controlling fast chaos in
             time-delay dynamical systems and use it to control a chaotic
             photonic device with a characteristic time scale of
             approximately 12 ns. Our approach is a prescription for how
             to implement existing chaos-control algorithms in a way that
             exploits the system's inherent time delay and allows control
             even in the presence of substantial control-loop latency
             (the finite time it takes signals to propagate through the
             components in the controller). This research paves the way
             for applications exploiting fast control of chaos, such as
             chaos-based communication schemes and stabilizing the
             behavior of ultrafast lasers.},
   Doi = {10.1103/PhysRevLett.92.193901},
   Key = {fds246499}
}

@article{fds246440,
   Author = {Stenner, MD and Gauthier, DJ and Neifeld, MA},
   Title = {Superluminal speed of information? Reply},
   Journal = {Nature},
   Volume = {429},
   Number = {6987},
   Pages = {6987},
   Year = {2004},
   Month = {May},
   ISSN = {0028-0836},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000221222100036&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Doi = {10.1038/nature02587},
   Key = {fds246440}
}

@article{fds304563,
   Author = {Tolkacheva, EG and Romeo, MM and Guerraty, M and Gauthier,
             DJ},
   Title = {Condition for alternans and its control in a two-dimensional
             mapping model of paced cardiac dynamics},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {69},
   Number = {3},
   Pages = {031904},
   Year = {2004},
   Month = {March},
   ISSN = {1539-3755},
   Abstract = {We investigate a two-dimensional mapping model of a paced,
             isolated cardiac cell that relates the duration of the
             action potential to the two preceding diastolic intervals as
             well as the preceding action potential duration. The model
             displays rate-dependent restitution and hence memory. We
             derive a criterion for the stability of the 1:1 response
             pattern displayed by the model. This criterion can be
             written in terms of experimentally measured quantities-the
             slopes of restitution curves obtained via different pacing
             protocols. In addition, we analyze the two-dimensional
             mapping model in the presence of closed-loop feedback
             control. The control is initiated by making small
             adjustments to the pacing interval in order to suppress
             alternans and stabilize the 1:1 pattern. We find that the
             domain of control does not depend on the functional form of
             the map, and, in the general case, is characterized by a
             combination of the slopes. We show that the gain gamma
             necessary to establish control may vary significantly
             depending on the value of the slope of the so-called
             standard restitution curve (herein denoted as S12), but that
             the product gammaS12 stays approximately in the same
             range.},
   Key = {fds304563}
}

@article{fds246441,
   Author = {Tolkacheva, EG and Romeo, MM and Guerraty, M and Gauthier,
             DJ},
   Title = {Condition for alternans and its control in a two-dimensional
             mapping model of paced cardiac dynamics.},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {69},
   Number = {3 Pt 1},
   Pages = {031904},
   Year = {2004},
   Month = {March},
   ISSN = {1539-3755},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/15089319},
   Abstract = {We investigate a two-dimensional mapping model of a paced,
             isolated cardiac cell that relates the duration of the
             action potential to the two preceding diastolic intervals as
             well as the preceding action potential duration. The model
             displays rate-dependent restitution and hence memory. We
             derive a criterion for the stability of the 1:1 response
             pattern displayed by the model. This criterion can be
             written in terms of experimentally measured quantities-the
             slopes of restitution curves obtained via different pacing
             protocols. In addition, we analyze the two-dimensional
             mapping model in the presence of closed-loop feedback
             control. The control is initiated by making small
             adjustments to the pacing interval in order to suppress
             alternans and stabilize the 1:1 pattern. We find that the
             domain of control does not depend on the functional form of
             the map, and, in the general case, is characterized by a
             combination of the slopes. We show that the gain gamma
             necessary to establish control may vary significantly
             depending on the value of the slope of the so-called
             standard restitution curve (herein denoted as S12), but that
             the product gammaS12 stays approximately in the same
             range.},
   Doi = {10.1103/PhysRevE.69.031904},
   Key = {fds246441}
}

@article{fds246500,
   Author = {Blakely, JN and Illing, L and Gauthier, DJ},
   Title = {High-Speed Chaos in an Optical Feedback System With Flexible
             Timescales},
   Journal = {IEEE Journal of Quantum Electronics},
   Volume = {40},
   Number = {3},
   Pages = {299-305},
   Year = {2004},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/IEEEjqe40_299.pdf},
   Abstract = {We describe a new optoelectronic device with time-delayed
             feedback that uses a Mach-Zehnder interferometer as passive
             nonlinearity and a semiconductor laser as a
             current-to-optical-frequency converter. Band-limited
             feedback allows tuning of the characteristic time scales of
             both the periodic and high dimensional chaotic oscillations
             that can be generated with the device. Our implementation of
             the device produces oscillations in the frequency range of
             tens to hundreds of megahertz. We develop a model and use it
             to explore the experimentally observed Andronov-Hopf
             bifurcation of the steady state and to estimate the
             dimension of the chaotic attractor.},
   Doi = {10.1109/JQE.2003.823021},
   Key = {fds246500}
}

@article{fds246501,
   Author = {Tolkacheva, EG and Romeo, MM and Gauthier, DJ},
   Title = {Control of cardiac alternans in a mapping model with
             memory},
   Journal = {Physica D: Nonlinear Phenomena},
   Volume = {194},
   Number = {3-4},
   Pages = {385-391},
   Year = {2004},
   url = {http://www.phy.duke.edu/research/photon/qelectron/pubs/PhysicaD194_385.pdf},
   Abstract = {A generic feature of cardiac muscle is that the duration of
             an action potential depends on the long-term history of
             previous action potentials, known as cardiac 'memory'. Even
             though memory is known to be an important physiological
             response, there have only been limited studies of its effect
             on cardiac dynamics. Here, we investigate a map-based model
             of paced myocardium in the presence of closed-loop feedback
             control. The model relates the duration of an action
             potential to the preceding diastolic interval as well as the
             preceding action potential duration and thus has some degree
             of memory. We find that the range of parameters over which
             control is effective can be enlarged or reduced by memory, a
             prediction that is independent of the specific functional
             form of the map. Our work suggests that modifying the degree
             of memory (e.g., pharmacological agents) with some form of
             feedback control may be an effective strategy for the
             maintenance of normal cardiac function. © 2004 Elsevier
             B.V. All rights reserved.},
   Doi = {10.1016/j.physd.2004.03.008},
   Key = {fds246501}
}

@article{fds304566,
   Author = {Stenner, MD and Gauthier, DJ and Neifeld, MA},
   Title = {The speed of information in a 'fast-light' optical
             medium.},
   Journal = {Nature},
   Volume = {425},
   Number = {6959},
   Pages = {695-698},
   Year = {2003},
   Month = {October},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/14562097},
   Abstract = {One consequence of the special theory of relativity is that
             no signal can cause an effect outside the source light cone,
             the space-time surface on which light rays emanate from the
             source. Violation of this principle of relativistic
             causality leads to paradoxes, such as that of an effect
             preceding its cause. Recent experiments on optical pulse
             propagation in so-called 'fast-light' media--which are
             characterized by a wave group velocity upsilon(g) exceeding
             the vacuum speed of light c or taking on negative
             values--have led to renewed debate about the definition of
             the information velocity upsilon(i). One view is that
             upsilon(i) = upsilon(g) (ref. 4), which would violate
             causality, while another is that upsilon(i) = c in all
             situations, which would preserve causality. Here we find
             that the time to detect information propagating through a
             fast-light medium is slightly longer than the time required
             to detect the same information travelling through a vacuum,
             even though upsilon(g) in the medium vastly exceeds c. Our
             observations are therefore consistent with relativistic
             causality and help to resolve the controversies surrounding
             superluminal pulse propagation.},
   Doi = {10.1038/nature02016},
   Key = {fds304566}
}

@article{fds246493,
   Author = {Tolkacheva, EG and Schaeffer, DG and Gauthier, DJ and Krassowska,
             W},
   Title = {Condition for alternans and stability of the 1:1 response
             pattern in a "memory" model of paced cardiac
             dynamics.},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {67},
   Number = {3 Pt 1},
   Pages = {031904},
   Year = {2003},
   Month = {March},
   ISSN = {1539-3755},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/12689098},
   Abstract = {We analyze a mathematical model of paced cardiac muscle
             consisting of a map relating the duration of an action
             potential to the preceding diastolic interval as well as the
             preceding action potential duration, thereby containing some
             degree of "memory." The model displays rate-dependent
             restitution so that the dynamic and S1-S2 restitution curves
             are different, a manifestation of memory in the model. We
             derive a criterion for the stability of the 1:1 response
             pattern displayed by this model. It is found that the
             stability criterion depends on the slope of both the dynamic
             and S1-S2 restitution curves, and that the pattern can be
             stable even when the individual slopes are greater or less
             than one. We discuss the relation between the stability
             criterion and the slope of the constant-BCL restitution
             curve. The criterion can also be used to determine the
             bifurcation from the 1:1 response pattern to alternans. We
             demonstrate that the criterion can be evaluated readily in
             experiments using a simple pacing protocol, thus
             establishing a method for determining whether actual
             myocardium is accurately described by such a mapping model.
             We illustrate our results by considering a specific map
             recently derived from a three-current membrane model and
             find that the stability of the 1:1 pattern is accurately
             described by our criterion. In addition, a numerical
             experiment is performed using the three-current model to
             illustrate the application of the pacing protocol and the
             evaluation of the criterion.},
   Doi = {10.1103/PhysRevE.67.031904},
   Key = {fds246493}
}

@article{fds304564,
   Author = {Tolkacheva, EG and Schaeffer, DG and Gauthier, DJ and Krassowska,
             W},
   Title = {Condition for alternans and stability of the 1:1 response
             pattern in a "memory" model of paced cardiac
             dynamics},
   Journal = {Physical Review E - Statistical, Nonlinear, and Soft Matter
             Physics},
   Volume = {67},
   Number = {3},
   Pages = {031904},
   Year = {2003},
   Month = {March},
   ISSN = {1539-3755},
   Abstract = {We analyze a mathematical model of paced cardiac muscle
             consisting of a map relating the duration of an action
             potential to the preceding diastolic interval as well as the
             preceding action potential duration, thereby containing some
             degree of "memory." The model displays rate-dependent
             restitution so that the dynamic and S1-S2 restitution curves
             are different, a manifestation of memory in the model. We
             derive a criterion for the stability of the 1:1 response
             pattern displayed by this model. It is found that the
             stability criterion depends on the slope of both the dynamic
             and S1-S2 restitution curves, and that the pattern can be
             stable even when the individual slopes are greater or less
             than one. We discuss the relation between the stability
             criterion and the slope of the constant-BCL restitution
             curve. The criterion can also be used to determine the
             bifurcation from the 1:1 response pattern to alternans. We
             demonstrate that the criterion can be evaluated readily in
             experiments using a simple pacing protocol, thus
             establishing a method for determining whether actual
             myocardium is accurately described by such a mapping model.
             We illustrate our results by considering a specific map
             recently derived from a three-current membrane model and
             find that the stability of the 1:1 pattern is accurately
             described by our criterion. In addition, a numerical
             experiment is performed using the three-current model to
             illustrate the application of the pacing protocol and the
             evaluation of the criterion.},
   Key = {fds304564}
}

@article{fds324415,
   Author = {Fernández-Soler, JJ and Font, JL and Vilaseca, R and Gauthier,
             DJ},
   Title = {Multi-photon gain resonances and associated lasing in
             coherently-driven potassium atoms},
   Journal = {2003 European Quantum Electronics Conference, EQEC
             2003},
   Pages = {46},
   Year = {2003},
   Month = {January},
   ISBN = {0780377338},
   url = {http://dx.doi.org/10.1109/EQEC.2003.1313903},
   Abstract = {This study presents a more complete and wider ranging
             theoretical study of the amplification and lasing
             possibilities in alkaline atoms that takes advantage of the
             multiplicity of hyperfine and magnetic sublevels involved in
             the 39 K 4S 1/2 -4P 1/2 transition. Using drive and probe
             fields of appropriate polarizations and propagation
             directions, and optically pumped atoms, (n+m) multi-photon
             resonances involving absorption of n drive photons and
             simultaneous emission of m probe photons can be generated.
             Theoretical predictions are in good agreement with
             experimental findings.},
   Doi = {10.1109/EQEC.2003.1313903},
   Key = {fds324415}
}

@article{fds324416,
   Author = {Gauthier, DJ},
   Title = {Instability limits to "fast light" optical pulse
             propagation},
   Journal = {2003 European Quantum Electronics Conference, EQEC
             2003},
   Pages = {117},
   Year = {2003},
   Month = {January},
   ISBN = {0780377338},
   url = {http://dx.doi.org/10.1109/EQEC.2003.1313974},
   Abstract = {This work demonstrates a novel experimental configuration
             that uses two potassium vapor cells, each of which is pumped
             by a single monochromatic beam, to suppress modulation
             instability. The linear dispersive properties of the
             combined system gives rise to fast light (similar to
             dispersion management in optical telecommunication systems),
             but the induced modulation instability cannot occur because
             no atom experience the combined effect of both pump
             frequencies. Results also show the electronic power spectrum
             of the detected fluctuations in the transmitted bichromatic
             pump beam, optical pulse propagation through a cell of
             potassium atoms pumped by a bichromatic field, and a large
             fast-light pulse advancement using the two-zone
             setup.},
   Doi = {10.1109/EQEC.2003.1313974},
   Key = {fds324416}
}

@article{fds17186,
   Author = {D.J. Gauthier and O. Pfister and W. J. Brown and M. D.
             Stenner},
   Title = {Dynamics of a two-photon laser},
   Pages = {547-548},
   Booktitle = {Coherence and Quantum Optics VIII},
   Publisher = {Kluwer Academic/Plenum Publishers, New York},
   Editor = {N.P. Bigelow and J.H. Eberly and C.R. Stroud and I.A.
             Walmsley},
   Year = {2003},
   Key = {fds17186}
}

@article{fds16317,
   Author = {D.J. Gauthier},
   Title = {Two-photon lasers},
   Volume = {45},
   Pages = {205-272},
   Booktitle = {Progress in Optics},
   Publisher = {Elsevier, Amsterdam},
   Editor = {E. Wolf},
   Year = {2003},
   Key = {fds16317}
}

@article{fds17187,
   Author = {D.J. Gauthier and O. Pfister and W.J. Brown and M.D.
             Stenner},
   Title = {Polarization Dynamics of a Two-Photon Laser},
   Pages = {131-136},
   Booktitle = {in Coherence and Quantum Optics VIII},
   Publisher = {Kluwer Academic/Plenum Publishers, New York},
   Editor = {N. P. Bigelow and J. H. Eberly and C. R. Stroud and I. A.
             Walmsley},
   Year = {2003},
   Key = {fds17187}
}

@article{fds17188,
   Author = {D.J. Gauthier and M.D. Stenner},
   Title = {Pulse propagation in a high-gain bichromatically-driven
             Raman amplifier},
   Pages = {619-620},
   Booktitle = {Coherence and Quantum Optics VIII},
   Publisher = {Kluwer Academic/Plenum Publishers, New York},
   Editor = {N. P. Bigelow and J. H. Eberly and C. R. Stroud and I. A.
             Walmsley},
   Year = {2003},
   Key = {fds17188}
}

@article{fds246314,
   Author = {Gauthier, DJ},
   Title = {Chapter 4Two-photon lasers},
   Journal = {Progress in Optics},
   Volume = {45},
   Number = {C},
   Pages = {205-272},
   Year = {2003},
   ISSN = {0079-6638},
   url = {http://dx.doi.org/10.1016/S0079-6638(03)80006-9},
   Doi = {10.1016/S0079-6638(03)80006-9},
   Key = {fds246314}
}

@article{fds246316,
   Author = {Kul'minskii, A and Gauthier, DJ and Vilaseca, R and Fernandez-Soler,
             JJ and Font, JL},
   Title = {Polarization dynamics of two-photon and cascade lasers in
             the presence of an arbitrarily directed magnetic
             field},
   Journal = {Journal of Optics B: Quantum and Semiclassical
             Optics},
   Volume = {5},
   Number = {3},
   Pages = {243-253},
   Year = {2003},
   url = {http://dx.doi.org/10.1088/1464-4266/5/3/308},
   Abstract = {We study theoretically the polarization dynamics of a new
             type of quantum oscillator that is based on the two-photon
             stimulated emission process in the presence of a magnetic
             field of arbitrary orientation. Both cases of cascade (small
             intermediate-state atomic detuning) and two-photon (large
             atomic detuning) lasers are considered. The primary goal of
             this work is to investigate the origin of recently observed
             polarization instabilities in a two-photon laser (Pfister et
             al 2001 Phys. Rev. Lett. 86 4512) using a highly simplified
             model. It is found that the two-photon laser can emit
             linearly polarized radiation with its plane of polarization
             orthogonal to the direction of the magnetic field at small
             magnetic field strengths. It can also emit elliptically
             polarized radiation over a large range of magnetic field
             strengths and orientations. When the magnetic field deviates
             from a direction perpendicular to the laser cavity axis
             periodic instabilities can appear through a Hopf
             bifurcation. This dynamic regime could have contributed to
             the polarization instabilities observed in the
             experiment.},
   Doi = {10.1088/1464-4266/5/3/308},
   Key = {fds246316}
}

@article{fds246369,
   Author = {Stenner, MD and Gauthier, DJ},
   Title = {Observation of large "fast light" pulse advancement without
             distortion},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Volume = {89},
   Pages = {QMK3/1-QMK3/2},
   Year = {2003},
   Abstract = {We observe pulses advanced by 15% of their width and
             experiencing only minor distortion using laser-driven
             potassium atoms in a novel configuration that avoids
             competing nonlinear optical effects. ©2002 Optical Society
             of America.},
   Key = {fds246369}
}

@article{fds246466,
   Author = {Stenner, MD and Gauthier, DJ and Neifeld, MA},
   Title = {The speed of information in a `fast light' optical
             medium},
   Journal = {Nature},
   Volume = {425},
   Number = {6959},
   Pages = {665},
   Year = {2003},
   url = {http://www.phy.duke.edu/research/photon/qelectron/proj/infv/},
   Abstract = {One consequence of the special theory of relativity is that
             no signal can cause an effect outside the source light cone,
             the space-time surface on which light rays emanate from the
             source. Violation of this principle of relativistic
             causality leads to paradoxes, such as that of an effect
             preceding its cause. Recent experiments on optical pulse
             propagation in so-called 'fast-light' media--which are
             characterized by a wave group velocity upsilon(g) exceeding
             the vacuum speed of light c or taking on negative
             values--have led to renewed debate about the definition of
             the information velocity upsilon(i). One view is that
             upsilon(i) = upsilon(g) (ref. 4), which would violate
             causality, while another is that upsilon(i) = c in all
             situations, which would preserve causality. Here we find
             that the time to detect information propagating through a
             fast-light medium is slightly longer than the time required
             to detect the same information travelling through a vacuum,
             even though upsilon(g) in the medium vastly exceeds c. Our
             observations are therefore consistent with relativistic
             causality and help to resolve the controversies surrounding
             superluminal pulse propagation.},
   Doi = {10.1038/nature02016},
   Key = {fds246466}
}

@article{fds246467,
   Author = {Gauthier, DJ},
   Title = {Resource letter: CC-1: Controlling chaos},
   Journal = {American journal of physics},
   Volume = {71},
   Number = {8},
   Pages = {750-759},
   Year = {2003},
   ISSN = {0002-9505},
   url = {http://dx.doi.org/10.1119/1.1572488},
   Abstract = {This Resource Letter provides a guide to the literature on
             controlling chaos. Journal articles, books, and web pages
             are provided for the following: controlling chaos,
             controlling chaos with weak periodic perturbations,
             controlling chaos in electronic circuits, controlling
             spatiotemporal chaos, targeting trajectories of nonlinear
             dynamical systems, synchronizing chaos, communicating with
             chaos, applications of chaos control in physical systems,
             and applications of chaos control in biological systems. ©
             2003 American Association of Physics Teachers.},
   Doi = {10.1119/1.1572488},
   Key = {fds246467}
}

@article{fds246491,
   Author = {Fernández-Soler, JJ and Font, JL and Vilaseca, R and Gauthier, DJ and Kul'minskii, A},
   Title = {Multiphoton amplification processes and quantum-path
             interferences in a coherently driven atomic
             vapor},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {68},
   Number = {4 B},
   Pages = {043824/1-043824/13},
   Year = {2003},
   ISSN = {1050-2947},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000188711400064&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Abstract = {The multiphoton gain features arising in the interaction of
             a drive and a probe field of arbitrary intensities with the
             D1 transition of an alkali-metal atom were theoretically
             studied. Theory was used to predict gain spectra for the
             situation of 39K. In addition, the effects of interference
             among different quantum pathways contributing to the
             observed resonance were clarified.},
   Doi = {10.1103/PhysRevA.68.043824},
   Key = {fds246491}
}

@article{fds246492,
   Author = {Stenner, MD and Gauthier, DJ},
   Title = {Pump-beam-instability limits to Raman-gain-doublet
             "fast-light" pulse propagation},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {67},
   Number = {6},
   Pages = {638011-638017},
   Year = {2003},
   ISSN = {1050-2947},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000183915200116&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Abstract = {A study was performed on pump-beam-instability limits to
             Raman-gain-doublet 'fast-light' pulse propagation. It was
             shown that the instability was attributed to the combined
             effects of the cross modulation instability and stimulated
             Raman scattering. The results showed that the fast-light
             pulse advancement was limited to just a few percent of the
             pulse width using the pulse advancement technique.},
   Doi = {10.1103/PhysRevA.67.063801},
   Key = {fds246492}
}

@article{fds246502,
   Author = {Kul'minskii, A and Gauthier, DJ and Vilaseca, R and Fernandez Soler,
             JJ and Font, JL},
   Title = {Polarization behavior of a cascade / two-photon lsaer in the
             presence of an arbitrarily directed magnetic
             field},
   Journal = {J. Opt. B: Quantum Semiclass. Opt.},
   Volume = {5},
   Pages = {243},
   Year = {2003},
   Key = {fds246502}
}

@article{fds3778,
   Author = {R.W. Boyd and D.J. Gauthier},
   Title = {"Slow" and "Fast" Light},
   Volume = {43},
   Pages = {497-530},
   Booktitle = {Progress in Optics},
   Editor = {E. Wolf},
   Year = {2002},
   Month = {December},
   Key = {fds3778}
}

@article{fds246494,
   Author = {Tolkacheva, EG and Schaeffer, DG and Gauthier, DJ and Mitchell,
             CC},
   Title = {Analysis of the Fenton-Karma model through an approximation
             by a one-dimensional map.},
   Journal = {Chaos},
   Volume = {12},
   Number = {4},
   Pages = {1034-1042},
   Year = {2002},
   Month = {December},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/12779627},
   Abstract = {The Fenton-Karma model is a simplification of complex ionic
             models of cardiac membrane that reproduces quantitatively
             many of the characteristics of heart cells; its behavior is
             simple enough to be understood analytically. In this paper,
             a map is derived that approximates the response of the
             Fenton-Karma model to stimulation in zero spatial
             dimensions. This map contains some amount of memory,
             describing the action potential duration as a function of
             the previous diastolic interval and the previous action
             potential duration. Results obtained from iteration of the
             map and numerical simulations of the Fenton-Karma model are
             in good agreement. In particular, the iterated map admits
             different types of solutions corresponding to various
             dynamical behavior of the cardiac cell, such as 1:1 and 2:1
             patterns. (c) 2002 American Institute of
             Physics.},
   Doi = {10.1063/1.1515170},
   Key = {fds246494}
}

@article{fds246513,
   Author = {Gauthier, DJ and Hall, GM and Oliver, RA and Dixon-Tulloch, EG and Wolf,
             PD and Bahar, S},
   Title = {Progress toward controlling in vivo fibrillating sheep atria
             using a nonlinear-dynamics-based closed-loop feedback
             method.},
   Journal = {Chaos},
   Volume = {12},
   Number = {3},
   Pages = {952-961},
   Year = {2002},
   Month = {September},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/12779619},
   Abstract = {We describe preliminary experiments on controlling in vivo
             atrial fibrillation using a closed-loop feedback protocol
             that measures the dynamics of the right atrium at a single
             spatial location and applies control perturbations at a
             single spatial location. This study allows investigation of
             control of cardiac dynamics in a preparation that is
             physiologically close to an in vivo human heart. The
             spatial-temporal response of the fibrillating sheep atrium
             is measured using a multi-channel electronic recording
             system to assess the control effectiveness. In an attempt to
             suppress fibrillation, we implement a scheme that paces
             occasionally the cardiac muscle with small shocks. When
             successful, the inter-activation time interval is the same
             and electrical stimuli are only applied when the controller
             senses that the dynamics are beginning to depart from the
             desired periodic rhythm. The shock timing is adjusted in
             real time using a control algorithm that attempts to
             synchronize the most recently measured inter-activation
             interval with the previous interval by inducing an
             activation at a time projected by the algorithm. The scheme
             is "single-sided" in that it can only shorten the
             inter-activation time but not lengthen it. Using probability
             distributions of the inter-activation time intervals, we
             find that the feedback protocol is not effective in
             regularizing the dynamics. One possible reason for the
             less-than-successful results is that the controller often
             attempts to stimulate the tissue while it is still in the
             refractory state and hence it does not induce an activation.
             (c) 2002 American Institute of Physics.},
   Doi = {10.1063/1.1494155},
   Key = {fds246513}
}

@article{fds246469,
   Author = {Bennink, RS and Wong, V and Marino, AM and Aronstein, DL and Boyd, RW and Stroud, CR and Lukishova, S and Gauthier, DJ},
   Title = {Honeycomb pattern formation by laser-beam filamentation in
             atomic sodium vapor},
   Journal = {Physical Review Letters},
   Volume = {88},
   Number = {11},
   Pages = {29-},
   Year = {2002},
   Month = {March},
   ISSN = {0031-9007},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000174541700013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Abstract = {Optical pattern formation was discussed. A single laser beam
             propagating without feedback through atomic sodium vapor
             develops a stable, regular, transverse structure was used.
             It was found that a three-filament near-field pattern
             leading to a honeycomb far-field pattern occurs at
             intensities near the saturation intensity.},
   Doi = {10.1103/PhysRevLett.88.113901},
   Key = {fds246469}
}

@article{fds318446,
   Author = {Bennink, RS and Wong, V and Marino, AM and Aronstein, DL and Boyd, RW and Jr, CRS and Lukishova, S and Gauthier, DJ},
   Title = {Honeycomb pattern formation by laser-beam filamentation in
             atomic sodium vapor},
   Journal = {Optics & Photonics News},
   Volume = {13},
   Number = {12},
   Pages = {29-},
   Year = {2002},
   ISBN = {0780377338},
   url = {http://dx.doi.org/10.1109/EQEC.2003.1313969},
   Abstract = {Optical pattern formation was discussed. A single laser beam
             propagating without feedback through atomic sodium vapor
             develops a stable, regular, transverse structure was used.
             It was found that a three-filament near-field pattern
             leading to a honeycomb far-field pattern occurs at
             intensities near the saturation intensity.},
   Doi = {10.1109/EQEC.2003.1313969},
   Key = {fds318446}
}

@article{fds246309,
   Author = {Stenner, MD and Gauthier, DJ},
   Title = {Induced-modulation-instabilities limit to "fast" light
             propagation},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Volume = {74},
   Pages = {175-},
   Year = {2002},
   Abstract = {Induced modulation instability is discussed in the context
             of high-gain bichromatically-driven atomic systems and
             specifically in the context of fast-light pulse propagation.
             Practical limitations that the induced modulation
             instability poses on this method for creating faster-than-c
             pulses are outlined.},
   Key = {fds246309}
}

@article{fds246311,
   Author = {Boyd, RW and Gauthier, DJ},
   Title = {Chapter 6 "Slow" and "fast" light},
   Journal = {Progress in Optics},
   Volume = {43},
   Number = {C},
   Pages = {497-530},
   Year = {2002},
   ISSN = {0079-6638},
   url = {http://dx.doi.org/10.1016/S0079-6638(02)80030-0},
   Doi = {10.1016/S0079-6638(02)80030-0},
   Key = {fds246311}
}

@article{fds246495,
   Author = {Fernández-Soler, JJ and Font, JL and Vilaseca, R and Gauthier, DJ and Kul'minski, A and Pfister, O},
   Title = {Two-photon amplification and lasing in laser-driven
             potassium atoms: Theoretical analysis},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {65},
   Number = {3 A},
   Pages = {031803/1-031803/4},
   Year = {2002},
   Abstract = {A semi-classical model of the interaction between two
             intense electromagnetic fields with fixed states of
             polarization and a collection of potassium atoms is
             introduced. The model is used to explain features of the
             recent two-photon amplification and lasing experiments. The
             model takes into account the population and coherence
             effects brought about by the presence of the intense drive
             and probe (or lasing) fields as well as the details of the
             hyperfine level manifolds involved in the atom-field
             interaction.},
   Key = {fds246495}
}

@article{fds246496,
   Author = {Hall, GM and Gauthier, DJ},
   Title = {Experimental control of cardiac muscle alternans},
   Journal = {Physical Review Letters},
   Volume = {88},
   Number = {19},
   Pages = {1981021-1981024},
   Year = {2002},
   ISSN = {0031-9007},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/12005667},
   Abstract = {The experimental results of suppression of cardiac muscle
             alternans in small pieces of in vitro paced bullfrog cardiac
             muscle were demonstrated using a simple self-referencing
             scheme. A large range of physiological conditions over many
             animals, control was made possible and the self-referencing
             control protocol was automatically adjusted to changes in
             paceing interval. The feasibility of developing low-energy
             methods for maintaining normal cardiac function were
             suggested by the results.},
   Doi = {10.1103/PhysRevLett.88.198102},
   Key = {fds246496}
}

@article{fds318447,
   Author = {Kul'minskii, A and Gauthier, DJ and Fernandez, J and Font, JL and Vilaseca, R and Pfister, O},
   Title = {Two-photon amplification and lasing in laser-driven
             potassium atoms: Theoretical analysis},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Volume = {74},
   Pages = {151-152},
   Year = {2002},
   Abstract = {The very recent results on efficient two-photon
             amplification and lasing in a potassium atomic beam are
             opening a way for the experimental investigation of the
             properties of two-photon laser systems. A model of the
             interaction between two intense fields and a collection of
             potassium atoms is presented. The model is used to explain
             features of the recent two-photon experiments.},
   Key = {fds318447}
}

@article{fds246468,
   Author = {Pfister, O and Brown, WJ and Stenner, MD and Gauthier,
             DJ},
   Title = {Polarization instabilities in a two-photon
             laser.},
   Journal = {Physical Review Letters},
   Volume = {86},
   Number = {20},
   Pages = {4512-4515},
   Year = {2001},
   Month = {May},
   ISSN = {0031-9007},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/11384271},
   Abstract = {We describe the operating characteristics of a new type of
             quantum oscillator that is based on a two-photon stimulated
             emission process. This two-photon laser consists of
             spin-polarized and laser-driven 39K atoms placed in a
             high-finesse transverse-mode-degenerate optical resonator
             and produces a beam with a power of approximately 0.2 microW
             at a wavelength of 770 nm. We observe complex dynamical
             instabilities of the state of polarization of the two-photon
             laser, which are made possible by the atomic Zeeman
             degeneracy. We conjecture that the laser could emit
             polarization-entangled twin beams if this degeneracy is
             lifted.},
   Doi = {10.1103/PhysRevLett.86.4512},
   Key = {fds246468}
}

@article{fds322483,
   Author = {Stenner, MD and Gauthier, DJ},
   Title = {Quantum limits to superluminal advancement},
   Journal = {Technical Digest - Summaries of Papers Presented at the
             Quantum Electronics and Laser Science Conference, QELS
             2001},
   Pages = {9},
   Year = {2001},
   Month = {January},
   ISBN = {155752663X},
   url = {http://dx.doi.org/10.1109/QELS.2001.961778},
   Abstract = {© 2001 Optical Soc. Of America. Summary form only given.
             Using intense electromagnetic fields, it is now possible to
             tailor the absorption, amplification, and dispersion
             properties of multi-level atoms. Dramatic examples include
             the reduction of the group velocity of a pulse of light to
             17 m/s, and increasing the group velocity to values greater
             than c or even to negative values. The interpretation of a
             negative group velocity is that the peak of the pulse leaves
             the medium before it enters. We will discuss possible
             quantum limits to the advancement of the peak of a pulse
             propagating through a high-anomalous-dispersion medium and
             our experiments on pulses propagating through a
             dispersion-tailored potassium vapor.},
   Doi = {10.1109/QELS.2001.961778},
   Key = {fds322483}
}

@article{fds4901,
   Author = {D.J. Gauthier and S. Bahar and G.M. Hall},
   Title = {Controlling the dynamics of cardiac muscle using small
             electrical stimuli},
   Pages = {229 - 256},
   Booktitle = {Handbook of Biological Physics, Volume 4: Neuro-informatics,
             Neural Modelling},
   Publisher = {Elsevier, Amsterdam},
   Editor = {F. Moss and S. Gielen},
   Year = {2001},
   Key = {fds4901}
}

@article{fds246307,
   Author = {Gauthier, DJ and Bahar, S and Hall, GM},
   Title = {Chapter 7 Controlling the dynamics of cardiac muscle using
             small electrical stimuli},
   Journal = {Handbook of Biological Physics},
   Volume = {4},
   Number = {C},
   Pages = {229-255},
   Year = {2001},
   ISSN = {1383-8121},
   url = {http://dx.doi.org/10.1016/S1383-8121(01)80010-5},
   Doi = {10.1016/S1383-8121(01)80010-5},
   Key = {fds246307}
}

@article{fds246308,
   Author = {Gauthier, DJ and Pfister, O and Brown, WJ and Stenner,
             MD},
   Title = {Observation of polarization instabilities and chaos in a
             two-photon laser},
   Journal = {Optics & Photonics News},
   Volume = {12},
   Number = {12},
   Pages = {58-},
   Year = {2001},
   ISSN = {1047-6938},
   Abstract = {Polarization instabilities and chaos in a two-photon laser
             were discussed. The power of the beam emitted from the
             two-photon laser resonator was measured. Results showed that
             it is possible to suppress the instabilities using a strong
             magnetic field to lift the degeneracy of the different
             quantum pathways.},
   Key = {fds246308}
}

@article{fds246510,
   Author = {Blakely, JN and Gauthier, DJ and Johnson, G and Carroll, TL and Pecora,
             LM},
   Title = {Experimental investigation of high-quality synchronization
             of coupled oscillators.},
   Journal = {Chaos},
   Volume = {10},
   Number = {3},
   Pages = {738-744},
   Year = {2000},
   Month = {September},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/12779423},
   Abstract = {We describe two experiments in which we investigate the
             synchronization of coupled periodic oscillators. Each
             experimental system consists of two identical coupled
             electronic periodic oscillators that display bursts of
             desynchronization events similar to those observed
             previously in coupled chaotic systems. We measure the degree
             of synchronization as a function of coupling strength. In
             the first experiment, high-quality synchronization is
             achieved for all coupling strengths above a critical value.
             In the second experiment, no high-quality synchronization is
             observed. We compare our results to the predictions of the
             several proposed criteria for synchronization. We find that
             none of the criteria accurately predict the range of
             coupling strengths over which high-quality synchronization
             is observed. (c) 2000 American Institute of
             Physics.},
   Doi = {10.1063/1.1286996},
   Key = {fds246510}
}

@article{fds246512,
   Author = {Oliver, RA and Hall, GM and Bahar, S and Krassowska, W and Wolf, PD and Dixon-Tulloch, EG and Gauthier, DJ},
   Title = {Existence of bistability and correlation with
             arrhythmogenesis in paced sheep atria.},
   Journal = {Journal of Cardiovascular Electrophysiology},
   Volume = {11},
   Number = {7},
   Pages = {797-805},
   Year = {2000},
   Month = {July},
   ISSN = {1045-3873},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/10921797},
   Abstract = {INTRODUCTION: Studies of the electrical dynamics of cardiac
             tissue are important for understanding the mechanisms of
             arrhythmias. This study uses high-frequency pacing to
             investigate the dynamics of sheep atria. METHODS AND
             RESULTS: A 504-electrode mapping plaque was affixed to the
             right atrium in six sheep. Cathodal pacing stimuli were
             delivered to the center of the plaque. Pacing period (Tp)
             was decreased from 275 +/- 25 msec to 75 +/- 25 msec and
             then increased to 230 +/- 70 msec in steps of either 5 or 10
             msec. In all 21 trials in six sheep, the atrium responded
             1:1 at longer Tps and 2:1 at shorter Tps. As Tp was
             decreased, the response switched to 2:1 at a particular Tp.
             Conversely, as Tp was increased, the response switched back
             to 1:1 at a particular Tp. Over 21 trials, the 1:1-to-2:1
             and 2:1-to-1:1 transitions occurred at 119.5 +/- 18.8 msec
             and 130.0 +/- 19.1 msec, respectively. This hysteretic
             behavior yielded bistability windows, 10.5 +/- 7.2 msec
             wide, wherein 1:1 and 2:1 responses existed at the same Tp.
             In 15 trials and in all animals, idiopathic wavefronts
             emanating from outside the mapped region passed through the
             mapped region. In 13 of those trials, the idiopathic
             wavefronts occurred at Tps within the bistability window or
             within 35 msec of its upper or lower limit. CONCLUSION:
             Bistability windows and idiopathic wavefronts were observed
             and found to be correlated with each other, suggesting a
             connection between bistability and arrhythmogenesis.},
   Key = {fds246512}
}

@article{fds246509,
   Author = {Sukow, DW and Gauthier, DJ},
   Title = {Entraining power-dropout events in an external-cavity
             semiconductor laser using weak modulation of the injection
             current},
   Journal = {IEEE Journal of Quantum Electronics},
   Volume = {36},
   Number = {2},
   Pages = {175-183},
   Year = {2000},
   url = {http://dx.doi.org/10.1109/3.823463},
   Abstract = {We measure experimentally the effects of injection current
             modulation on the statistical distribution of time intervals
             between power-dropout events occurring in an external-cavity
             semiconductor laser operating in the low-frequency
             fluctuation regime. These statistical distributions are
             sensitive indicators of the presence of pump current
             modulation. Under most circumstances, we find that weak
             low-frequency (in the vicinity of 19 MHz) modulation of the
             current causes the dropouts to occur preferentially at
             intervals that are integral multiples of the modulation
             period. The dropout events can be entrained by the periodic
             perturbations when the modulation amplitude is large
             (peak-to-peak amplitude≥8% of the dc injection current).
             We conjecture that modulation induces a dropout when the
             modulation frequency is equal to the difference in frequency
             between a mode of the extended cavity laser and its adjacent
             antimode. We also find that the statistical distribution of
             the dropout events is unaffected by the periodic
             perturbations when the modulation frequency is equal to the
             free spectral range of the external cavity. Numerical
             simulations of the extended-cavity laser display
             qualitatively similar behavior. The relationship of these
             phenomena to stochastic resonance is discussed and a
             possible use of the modulated laser dynamics for chaos
             communication is described.},
   Doi = {10.1109/3.823463},
   Key = {fds246509}
}

@article{fds246511,
   Author = {Blakely, JN and Gauthier, DJ},
   Title = {Attractor bubbling in coupled hyperchaotic
             oscillators},
   Journal = {International Journal of Bifurcation and Chaos in Applied
             Sciences and Engineering},
   Volume = {10},
   Number = {4},
   Pages = {835-846},
   Year = {2000},
   Abstract = {We investigate experimentally attractor bubbling in a system
             of two coupled hyperchaotic electronic circuits. The degree
             of synchronization over a range of coupling strengths for
             two different coupling schemes is measured to identify
             bubbling. The circuits display regimes of both attractor
             bubbling and high-quality synchronization. For the coupling
             scheme where high-quality synchronization is observed, the
             transition to bubbling is "soft" and its scaling with
             coupling strength near the transition point does not fit
             into the known categories of transition types. We also
             compare the observed behavior to several proposed criteria
             for estimating the regime of high-quality synchronization.
             It is found that none of these methods is completely
             satisfactory for predicting accurately the regimes of
             attractor bubbling and high-quality synchronization.},
   Key = {fds246511}
}

@article{fds246305,
   Author = {Oliver, RA and Krassowska, W and Hall, GM and Bahar, S and Wolf, PD and Gauthier, DJ},
   Title = {Existence of bistability and correlation with
             arrhythmogenesis in sheep atria},
   Journal = {Annual International Conference of the IEEE Engineering in
             Medicine and Biology - Proceedings},
   Volume = {1},
   Pages = {157-},
   Year = {1999},
   Abstract = {This experimental study investigates the response of sheep
             atria to periodic pacing. In 23 trials over 6 animals, a
             window of bistability was observed wherein for a range of
             pacing periods the atria responded 1:1 or 2:1 depending on
             whether pacing period was increasing or decreasing. In 18
             trials, non-paced activations were also observed. In 17 of
             those 18 trials, the non-paced activations occurred at
             pacing periods within or no more than 30 ms away from the
             window of bistability. These results suggest bistability
             exists in cardiac tissue and is correlated with
             arrhythmogenesis.},
   Key = {fds246305}
}

@article{fds246306,
   Author = {Bahar, S and Hall, GM and Oliver, RA and Krassowska, W and Gauthier,
             DJ},
   Title = {Transitions between 2:1 and 1:1 responses in cardiac muscle
             induced by added stimuli},
   Journal = {Annual International Conference of the IEEE Engineering in
             Medicine and Biology - Proceedings},
   Volume = {1},
   Pages = {258-},
   Year = {1999},
   Abstract = {We demonstrate experimentally that transitions can be
             induced between stable coexisting response patterns in
             bullfrog ventricular myocardium by means of a single pulse
             injected into the stimulus train. We find that two distinct
             ranges of stimulus timings will elicit transitions from a
             1:1 state, in which one stimulus elicits one response, and a
             2:1 state, in which every other stimulus elicits a response.
             We also observe two distinct types of 2:1→1:1 transition.
             These transitions are differentiated by their transient
             behavior while settling from one stable state into another.
             We characterize these transitions, and the ranges of added
             stimulus timings which produce them, both experimentally and
             with two simple models of cardiac dynamics.},
   Key = {fds246306}
}

@article{fds246367,
   Author = {Pfister, O and Brown, WJ and Stenner, M and Gauthier,
             DJ},
   Title = {Experimental realization of a two-photon laser in strongly
             driven potassium atoms},
   Journal = {IQEC, International Quantum Electronics Conference
             Proceedings},
   Pages = {160-161},
   Year = {1999},
   Abstract = {Novel quantum oscillators consisting of strongly driven
             potassium atoms contained in a high-finesse optical
             resonator were examined. Two-photon amplification arose from
             laser-driven resonant scattering between magnetic hyperfine
             levels. A novel configuration using different states of
             polarization and an orthogonal beam geometry allowed
             discrimination between the numerous gain mechanisms. This
             configuration suppressed competing phase-matched wave-mixing
             processes, which was crucial to realize an ideal two-photon
             amplifier.},
   Key = {fds246367}
}

@article{fds246507,
   Author = {Hall, GM and Bahar, S and Gauthier, DJ},
   Title = {The prevalence of rate-dependent dynamics in cardiac
             tissue},
   Journal = {Phys. Rev. Lett.},
   Volume = {82},
   Number = {14},
   Pages = {2995},
   Year = {1999},
   Abstract = {We explore the rate-dependent dynamic response of
             periodically paced bullfrog (Rana catesbeiana) cardiac
             muscle. Alternans (2:2 behavior) occur in 35% of animals and
             2:1 ↔ 1:1 bistability in 74% of animals. In addition,
             we observe 2:2 ↔ 2:1 bistablility. We discuss the
             implications of these results for two map-based models of
             cardiac dynamics. The high prevalence of bistability
             suggests that this dynamical behavior must be accounted for
             in the design of closed-loop feedback protocols to stabilize
             cardiac dynamics. © 1999 The American Physical
             Society.},
   Key = {fds246507}
}

@article{fds246508,
   Author = {Pfister, O and Brown, WJ and Stenner, MD and Gauthier,
             DJ},
   Title = {Two-photon stimulated emission in laser-driven alkali-metal
             atoms using an orthogonal pump-probe geometry},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {60},
   Number = {6},
   Pages = {R4249-R4252},
   Year = {1999},
   Abstract = {We observe and analyze a two-photon continuous-wave optical
             gain mechanism designed for building a two-photon laser. The
             two-photon stimulated emission is spectrally isolated and
             resonantly enhanced using the multilevel structure of 39K,
             in conjunction with an alternative interaction geometry
             involving orthogonal beams and polarizations. The observed
             two-photon laser beam amplification increases linearly with
             low input laser beam intensity, as expected, and saturates
             at a gain of 2 × 10-4 at high intensity. A theoretical
             analysis of the observations is outlined.},
   Key = {fds246508}
}

@article{fds304571,
   Author = {Hall, GM and Bahar, S and Gauthier, DJ},
   Title = {Prevalence of rate-dependent behaviors in cardiac
             muscle},
   Journal = {Physical Review Letters},
   Volume = {82},
   Number = {14},
   Pages = {2995-2998},
   Year = {1999},
   Abstract = {We explore the rate-dependent dynamic response of
             periodically paced bullfrog (Rana catesbeiana) cardiac
             muscle. Alternans (2:2 behavior) occur in 35% of animals and
             2:1 ↔ 1:1 bistability in 74% of animals. In addition, we
             observe 2:2 ↔ 2:1 bistablility. We discuss the
             implications of these results for two map-based models of
             cardiac dynamics. The high prevalence of bistability
             suggests that this dynamical behavior must be accounted for
             in the design of closed-loop feedback protocols to stabilize
             cardiac dynamics. © 1999 The American Physical
             Society.},
   Key = {fds304571}
}

@article{fds246442,
   Author = {Chang, A and Bienfang, JC and Hall, GM and Gardner, JR and Gauthier,
             DJ},
   Title = {Stabilizing unstable steady states using extended time-delay
             autosynchronization.},
   Journal = {Chaos},
   Volume = {8},
   Number = {4},
   Pages = {782-790},
   Year = {1998},
   Month = {December},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/12779784},
   Abstract = {We describe a method for stabilizing unstable steady states
             in nonlinear dynamical systems using a form of extended
             time-delay autosynchronization. Specifically, stabilization
             is achieved by applying a feedback signal generated by
             high-pass-filtering in real time the dynamical state of the
             system to an accessible system parameter or variables. Our
             technique is easy to implement, does not require knowledge
             of the unstable steady state coordinates in phase space,
             automatically tracks changes in the system parameters, and
             is more robust to broadband noise than previous schemes. We
             demonstrate the controller's efficacy by stabilizing
             unstable steady states in an electronic circuit exhibiting
             low-dimensional temporal chaos. The simplicity and
             robustness of the scheme suggests that it is ideally suited
             for stabilizing unstable steady states in ultra-high-speed
             systems. (c) 1998 American Institute of Physics.},
   Doi = {10.1063/1.166357},
   Key = {fds246442}
}

@article{fds4914,
   Author = {D.J. Gauthier},
   Title = {Intermittent loss of synchronized chaos under conditions
             when high-quality synchronization is expected},
   Pages = {383-394},
   Booktitle = {Proceedings of the 4th Experimental Chaos
             Conference},
   Publisher = {World Scientific, Singapore},
   Editor = {M. Ding and W. Ditto and L. Pecora and M. Spano and S.
             Vohra},
   Year = {1998},
   Key = {fds4914}
}

@article{fds246365,
   Author = {Brown, WJ and Pfister, O and Gauthier, DJ},
   Title = {New mechanism for continuous-wave two-photon
             amplification},
   Journal = {Technical Digest - European Quantum Electronics
             Conference},
   Pages = {200-201},
   Year = {1998},
   Abstract = {A probe-laser beam is amplified using a laser-driven,
             high-density potassium atomic beam in the presence of a weak
             magnetic field. Two σ+-polarized beams tuned near the
             4S1/2-4P1/2 transition form an electromagnetically induced
             trapped state by optically pumping the atoms in the 4S1/2
             state. Two-photon amplification of the z-polarized probe
             beam occurs when the atom makes a transition from the 4S1/2
             trapped state to the 4S1/2 state in the presence of a
             σ--polarized pump-beam. In this two-photon Raman process,
             two photons are annihilated and two z-polarized probe
             photons are created. Analysis of the quantum pathways
             reveals that they add constructively, whereas other
             geometries or laser beam polarizations can lead to
             destructive interference between pathways.},
   Key = {fds246365}
}

@article{fds246503,
   Author = {Gauthier, DJ},
   Title = {Chaos comes again},
   Journal = {Science},
   Volume = {279},
   Number = {5354},
   Pages = {1156},
   Year = {1998},
   url = {http://dx.doi.org/10.1126/science.279.5354.1156},
   Doi = {10.1126/science.279.5354.1156},
   Key = {fds246503}
}

@article{fds246504,
   Author = {Gauthier, DJ},
   Title = {Controlling lasers by use of extended time-delay
             autosynchronization},
   Journal = {Optics Letters},
   Volume = {23},
   Number = {9},
   Pages = {703-705},
   Year = {1998},
   Abstract = {A method is described for suppressing chaotic instabilities
             in lasers by use of a specific form of controlling-chaos
             feedback. The technique is easy to implement and requires
             only application of small perturbations to an accessible
             system parameter or variable. © 1998 Optical Society of
             America.},
   Key = {fds246504}
}

@article{fds246505,
   Author = {Socolar, JES and Gauthier, DJ},
   Title = {Analysis and comparison of multiple-delay schemes for
             controlling unstable fixed points of discrete
             maps},
   Journal = {Physical Review E - Statistical Physics, Plasmas, Fluids,
             and Related Interdisciplinary Topics},
   Volume = {57},
   Number = {6},
   Pages = {6589-6595},
   Year = {1998},
   Abstract = {We investigate theoretically the stabilization of a fixed
             point of a discrete one-dimensional nonlinear map by
             applying small perturbations to an accessible system
             parameter or variable. The size of the perturbations is
             determined in real time using feedback schemes incorporating
             only the dynamical state of the system and its state at
             previous iterates without making a comparison to a reference
             state. In particular, we compare and contrast two
             algorithms: extended time-delay autosynchronization, which
             uses an infinite series of past iterates with weights that
             decay by a factor of R with each time step, and N-time-delay
             autosynchronization, which uses an average of N past
             iterates with equal weights. The range of feedback
             parameters that successfully stabilize the fixed point and
             the robustness of the schemes to noise are determined. It is
             found that the domain of control for the two schemes is
             similar for appropriately matched values of R and N, and
             that N-time-delay autosynchronization tends to be less
             sensitive to noise.},
   Key = {fds246505}
}

@article{fds246506,
   Author = {Hall, GM and Bahar, S and Gauthier, DJ},
   Title = {Experimental control of a chaotic point process using
             interspike intervals},
   Journal = {Physical Review E - Statistical Physics, Plasmas, Fluids,
             and Related Interdisciplinary Topics},
   Volume = {58},
   Number = {2 SUPPL. A},
   Pages = {1685-1689},
   Year = {1998},
   Abstract = {A physical point process generated by passing a continuous,
             deterministic, chaotic signal through an integrate-and-fire
             device is controlled using proportional feedback
             incorporating only the time intervals between events. This
             system is unique in that the mean time between events can be
             adjusted independent of the dynamics of the underlying
             chaotic system. It is found that the range of feedback
             parameters giving rise to control as a function of the mean
             firing time exhibits surprisingly complex structure, and
             control is not possible when the mean interspike interval is
             comparable to or larger than the underlying system memory
             time.},
   Key = {fds246506}
}

@article{fds304570,
   Author = {Gauthier, DJ},
   Title = {Chaos has come again},
   Journal = {Science},
   Volume = {279},
   Number = {5354},
   Pages = {1156-1157},
   Year = {1998},
   url = {http://dx.doi.org/10.1126/science.279.5354.1156},
   Doi = {10.1126/science.279.5354.1156},
   Key = {fds304570}
}

@booklet{Gauthier97,
   Author = {Gauthier, DJ and Socolar, JES},
   Title = {Dynamic control of cardiac alternans - Comment},
   Journal = {Physical Review Letters},
   Volume = {79},
   Number = {24},
   Pages = {4938-4938},
   Year = {1997},
   Month = {December},
   ISSN = {0031-9007},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1997YL24400061&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Doi = {10.1103/PhysRevLett.79.4938},
   Key = {Gauthier97}
}

@article{fds246304,
   Author = {Sukow, DW and Bleich, ME and Gauthier, DJ and Socolar,
             JES},
   Title = {Controlling chaos in a fast diode resonator using extended
             time-delay autosynchronization: Experimental observations
             and theoretical analysis.},
   Journal = {Chaos},
   Volume = {7},
   Number = {4},
   Pages = {560-576},
   Year = {1997},
   Month = {December},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/12779682},
   Abstract = {We stabilize unstable periodic orbits of a fast diode
             resonator driven at 10.1 MHz (corresponding to a drive
             period under 100 ns) using extended time-delay
             autosynchronization. Stabilization is achieved by feedback
             of an error signal that is proportional to the difference
             between the value of a state variable and an infinite series
             of values of the state variable delayed in time by integral
             multiples of the period of the orbit. The technique is easy
             to implement electronically and it has an all-optical
             counterpart that may be useful for stabilizing the dynamics
             of fast chaotic lasers. We show that increasing the weights
             given to temporally distant states enlarges the domain of
             control and reduces the sensitivity of the domain of control
             on the propagation delays in the feedback loop. We determine
             the average time to obtain control as a function of the
             feedback gain and identify the mechanisms that destabilize
             the system at the boundaries of the domain of control. A
             theoretical stability analysis of a model of the diode
             resonator in the presence of time-delay feedback is in good
             agreement with the experimental results for the size and
             shape of the domain of control. (c) 1997 American Institute
             of Physics.},
   Doi = {10.1063/1.166256},
   Key = {fds246304}
}

@booklet{Brown97,
   Author = {Brown, WJ and Gardner, JR and Gauthier, DJ and Vilaseca,
             R},
   Title = {Amplification of laser beams counterpropagating through a
             potassium vapor: The effects of atomic coherence},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {56},
   Number = {4},
   Pages = {3255-3261},
   Year = {1997},
   Month = {October},
   ISSN = {1050-2947},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1997YA78000101&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Doi = {10.1103/PhysRevA.56.3255},
   Key = {Brown97}
}

@article{fds246361,
   Author = {Gauthier, DJ and Brown, WJ and Gardner, JR and Vilaseca,
             R},
   Title = {Laser beam amplification resulting from collective atomic
             recoil},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Volume = {12},
   Pages = {110-111},
   Year = {1997},
   Abstract = {The theory that large laser beam amplification resulting
             from the coherent driving of the atomic dipole moment is
             discussed. The coherent driving is expected even when the
             effects of the atomic recoil are ignored. The amplification
             occurs over a similar spectral region where large atomic
             recoil induced gain is predicted. The experiments of Hemmer
             and Lippi are discussed in light of a possible complex
             interplay between collective atomic recoil
             effects.},
   Key = {fds246361}
}

@article{fds246362,
   Author = {Sukow, DW and Gauthier, DJ},
   Title = {Suppression and entrainment of power-dropout events in
             external-cavity semiconductor lasers},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Volume = {12},
   Pages = {181-182},
   Year = {1997},
   Abstract = {The possibility of regulating the instability known as
             low-frequency fluctuations (LFF) was demonstrated by
             perturbing the current injected into the laser. LFF occurs
             when a semiconductor laser is subjected to weak or moderate
             feedback from a distant reflector, and it appears as
             irregular, spontaneous dropouts in the laser intensity. The
             dynamics of LFF are exceptionally complex, occurring on
             widely disparate time scales: the interval between dropouts
             can be milliseconds, the dropouts themselves have widths of
             approximately 50 nanoseconds, and the laser emits an erratic
             train of pulses of approximately 100 ps width.},
   Key = {fds246362}
}

@article{fds246363,
   Author = {Brown, WJ and Gardner, JR and Gauthier, DJ},
   Title = {Quantum noise properties of a saturated amplifier},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Volume = {12},
   Pages = {143-},
   Year = {1997},
   Abstract = {The quantum noise properties of a laser beam propagating
             through a laser-pumped potassium vapor in a
             near-Doppler-free configuration was investigated. Large
             excess noise that peaks at approximately 12 MHz with a width
             of approximately 15 Mhz was observed at the lowest input
             power due to nonlinear optical processes which degraded the
             coherence properties of the strong pump beam. The use of
             larger input beam powers led to an increase in the bandwidth
             of the excess quantum noise.},
   Key = {fds246363}
}

@article{fds246364,
   Author = {Gardner, JR and Brown, WJ and Gauthier, DJ and Vilaseca,
             R},
   Title = {Collective atomic recoil and dressed-state
             resonances},
   Journal = {Conference on Quantum Electronics and Laser Science (QELS) -
             Technical Digest Series},
   Volume = {12},
   Pages = {218-},
   Year = {1997},
   Abstract = {Laser beam amplification in strongly driven potassium atoms
             is investigated. The pump and probe beams are tuned near the
             4S1/2→4P1/2(D1) transition and have linear, orthogonal
             polarizations. The probe beam amplification as a function of
             the probe-pump detuning curve is similar to that observed by
             Hemmer et al. The dependence of the amplification on the
             pump-beam intensity and tuning, and on the presence of
             helium or nitrogen buffer gas, is discussed.},
   Key = {fds246364}
}

@article{fds246454,
   Author = {Sukow, DW and Bleich, ME and Gauthier, DJ and Socolar,
             JES},
   Title = {Controlling chaos in fast dynamical systems: Experimental
             results and theoretical analysis},
   Journal = {and Invited article in Chaos},
   Volume = {7},
   Pages = {560},
   Year = {1997},
   Key = {fds246454}
}

@booklet{Brown97a,
   Author = {Brown, WJ and Gardner, JR and Gauthier, DJ and Vilaseca,
             R},
   Title = {Amplification of laser beams propagating through a
             collection of strongly driven, Doppler-broadened two-level
             atoms},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {55},
   Number = {3},
   Pages = {R1601-R1604},
   Year = {1997},
   Abstract = {We investigate theoretically the amplification of a laser
             beam propagating through a collection of Doppler-broadened
             two-level atoms driven by an intense counterpropagating
             laser beam. Large amplification of the beam is predicted
             when the pump-beam Rabi frequency is comparable to the
             Doppler width of the atomic transition, even without
             including the effects of atomic recoil. The microscopic
             origin of the gain can be attributed to the coherent driving
             of the atomic dipole moment, suggesting that amplification
             and lasing due to collective atomic recoil may be influenced
             by this process.},
   Key = {Brown97a}
}

@booklet{Concannon97,
   Author = {Concannon, HM and Brown, WJ and Gardner, JR and Gauthier,
             DJ},
   Title = {Observation of large continuous-wave two-photon optical
             amplification},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {56},
   Number = {2},
   Pages = {1519-1523},
   Year = {1997},
   Abstract = {We observe 30% two-photon optical amplification of a probe
             laser-field propagating through a laser-pumped potassium
             vapor. This amplification is spectrally isolated and
             substantially larger than that of previously reported
             continuous-wave two-photon amplifiers. The combination of
             large amplification and spectral isolation of the two-photon
             gain feature will greatly facilitate precise studies of the
             photon statistics of this highly nonlinear quantum amplifier
             and the development and characterization of a two-photon
             laser based on this gain medium. We also observe
             spectrally-distinct three-photon amplification (∼5%) in
             the same system under different experimental conditions. We
             present a simple model of the interaction that gives
             qualitative agreement with our observations and explains the
             dependence of the two-photon gain on the various system
             parameters. This model predicts that the size of the
             two-photon gain is quite sensitive to an interference
             between two different quantum pathways.},
   Key = {Concannon97}
}

@booklet{Sukow97,
   Author = {Sukow, DW and Gardner, JR and Gauthier, DJ},
   Title = {Statistics of power-dropout events in semiconductor lasers
             with time-delayed optical feedback},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {56},
   Number = {5},
   Pages = {R3370-R3373},
   Year = {1997},
   Abstract = {We measure experimentally the statistical distribution of
             time intervals between power-dropout events occurring in a
             semiconductor laser with time-delayed optical feedback
             operating in the low-frequency fluctuation regime. Near the
             laser threshold, the time-interval probability distribution
             displays a low-probability region, or dead zone, for short
             times, followed by a slow rise, and an exponential decay for
             long times. At higher injection currents, the distributions
             develop considerable structure. We compare our results to
             the predictions of approximate analytic models of the laser
             dynamics and find that no single model accurately captures
             the details of the observed distributions, indicating that
             our physical understanding of the long-term dynamics of the
             laser in this regime is less than complete.},
   Key = {Sukow97}
}

@article{fds246294,
   Author = {Gauthier, DJ and Concannon, HM},
   Title = {Observation of 30% continuous-wave two-photon optical
             amplification},
   Journal = {COHERENCE AND QUANTUM OPTICS VII},
   Pages = {501-502},
   Year = {1996},
   ISBN = {0-306-45314-2},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1996BG08Q00124&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Key = {fds246294}
}

@booklet{Venkataramani96,
   Author = {Venkataramani, SC and Hunt, BR and Ott, E and Gauthier, DJ and Bienfang,
             JC},
   Title = {Transitions to bubbling of chaotic systems},
   Journal = {Physical Review Letters},
   Volume = {77},
   Number = {27},
   Pages = {5361-5364},
   Year = {1996},
   Abstract = {Certain dynamical systems exhibit a phenomenon called
             bubbling, whereby small perturbations induce intermittent
             bursting. In this Letter we show that, as a parameter is
             varied through a critical value, the transition to bubbling
             can be "hard" (the bursts appear abruptly with large
             amplitude) or "soft" (the maximum burst amplitude increases
             continuously from zero), and that the presence or absence of
             symmetry in the unperturbed system has a fundamental effect
             on these transitions. These results are confirmed by
             numerical and physical experiments. © 1996 The American
             Physical Society.},
   Key = {Venkataramani96}
}

@booklet{Gauthier96,
   Author = {Gauthier, DJ and Bienfang, JC},
   Title = {Intermittent loss of synchronization in coupled chaotic
             oscillators: Toward a new criterion for high-quality
             synchronization},
   Journal = {Physical Review Letters},
   Volume = {77},
   Number = {9},
   Pages = {1751-1754},
   Year = {1996},
   Abstract = {We observe incomplete synchronization of coupled chaotic
             oscillators over a wide range of coupling strengths and
             coupling schemes for which high-quality synchronization is
             expected. Long intervals of high-quality synchronization are
             interrupted at irregular times by large, brief
             desynchronization events that can be attributed to
             "attractor bubbling," clearly demonstrating that the
             standard synchronization criterion is not always useful in
             experiments. We suggest a simple method for rapidly
             selecting the coupling schemes that are most likely to
             produce high-quality synchronization.},
   Key = {Gauthier96}
}

@article{fds44137,
   Author = {D.J. Gauthier and H.M. Concannon},
   Title = {Observation of 30% continuous-wave two-photon
             amplification},
   Pages = {501 - 502},
   Booktitle = {Coherence and Quantum Optics VIII},
   Publisher = {Plenum, New York},
   Editor = {J.H. Eberly and L. Mandel and E. Wolf},
   Year = {1995},
   Key = {fds44137}
}

@article{fds246303,
   Author = {Gauthier, DJ and Sukow, DW},
   Title = {Controlling chaos in fast optical systems},
   Journal = {Conference Proceedings - Lasers and Electro-Optics Society
             Annual Meeting-LEOS},
   Volume = {1},
   Pages = {33-34},
   Year = {1995},
   Abstract = {Chaotic systems can be stabilized by applying only small
             perturbations to some accessible system parameter. The OGY
             scheme and its variations have been used successfully to
             control the dynamics of lasers. This paper describes
             alternative implementations of the OGY scheme that
             efficiently stabilize the unstable periodic orbits (UPO's)
             and unstable steady-states (USS's) of fast dynamical systems
             using small perturbations. The schemes are well suited for
             controlling instabilities in high-speed optical systems such
             as diode lasers.},
   Key = {fds246303}
}

@booklet{Socolar94,
   Author = {Socolar, JE and Sukow, DW and Gauthier, DJ},
   Title = {Stabilizing unstable periodic orbits in fast dynamical
             systems.},
   Journal = {Physical Review E - Statistical Physics, Plasmas, Fluids,
             and Related Interdisciplinary Topics},
   Volume = {50},
   Number = {4},
   Pages = {3245-3248},
   Year = {1994},
   Month = {October},
   ISSN = {1063-651X},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/9962372},
   Key = {Socolar94}
}

@booklet{Gauthier94a,
   Author = {Gauthier, DJ and Sukow, DW and Concannon, HM and Socolar,
             JE},
   Title = {Stabilizing unstable periodic orbits in a fast diode
             resonator using continuous time-delay autosynchronization.},
   Journal = {Physical Review E - Statistical Physics, Plasmas, Fluids,
             and Related Interdisciplinary Topics},
   Volume = {50},
   Number = {3},
   Pages = {2343-2346},
   Year = {1994},
   Month = {September},
   ISSN = {1063-651X},
   url = {http://www.ncbi.nlm.nih.gov/pubmed/9962244},
   Key = {Gauthier94a}
}

@article{fds44136,
   Author = {D.J. Gauthier and H.M. Concannon},
   Title = {The two-photon laser},
   Pages = {365 - 384},
   Booktitle = {Nonlinear Spectroscopy of Solids: Advances and
             Applications},
   Publisher = {Plenum Press, New York},
   Editor = {B. Di Bartolo and B. Bowlby},
   Year = {1994},
   Key = {fds44136}
}

@article{fds246297,
   Author = {GAUTHIER, DJ and CONCANNON, HM},
   Title = {THE 2-PHOTON LASER},
   Journal = {Nato Asi Series B Physics},
   Volume = {339},
   Pages = {365-384},
   Year = {1994},
   ISBN = {0-306-44916-1},
   ISSN = {0258-1221},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1994BD26M00009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Key = {fds246297}
}

@booklet{Hooper94,
   Author = {Hooper, BA and Gauthier, DJ and Madey, JM},
   Title = {Fourth-harmonic generation in a single lithium
             niobate-crystal with cascaded second-harmonic
             generation},
   Journal = {Applied Optics},
   Volume = {33},
   Number = {30},
   Pages = {6980-6984},
   Year = {1994},
   ISSN = {0003-6935},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1994PN17900010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Abstract = {Second harmonic generation (SHG) and fourth harmonic
             generation (FHG) in single 1 cm long lithium niobate crystal
             pumped by 2-2.5 μm photons from Mark III free-electron
             laser and type I phase matched for first stage SHG. Energy
             conversion efficiencies of 66% for SHG and 3.3×10-6 for FHG
             are observed.},
   Key = {Hooper94}
}

@article{fds246456,
   Author = {Concannon, HM and Gauthier, DJ},
   Title = {Recent advances in two-photon lasers},
   Journal = {Condensed Matter News},
   Volume = {3},
   Pages = {7},
   Year = {1994},
   Key = {fds246456}
}

@booklet{Wu94a,
   Author = {Wu, Q and Gauthier, DJ and Mossberg, TW},
   Title = {Phase-sensitive dynamics of bichromatically driven two-level
             atoms},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {49},
   Number = {3},
   Pages = {1519-1522},
   Year = {1994},
   Abstract = {The study demonstrates the atomic dynamics in the presence
             of transient bichromatic excitation. The phase-dependent
             dynamics and the polarization of population with in the
             doublets of dressed states are reported that describe the
             atom coupled solely to the bichromatic field pump component.
             The focus of the study is on the transient response of
             two-level atoms to excitation by a step function bichromatic
             excitation field. The role of the initial relative phase of
             the bichromatic field components in determining the atomic
             response is demonstrated. A complete atom pump-field
             dressed-state polarization from certain initial relative
             phases was also shown.},
   Key = {Wu94a}
}

@booklet{Concannon94,
   Author = {Gauthier, DJ and Concannon, HM},
   Title = {Simple rate-equation for two-photon lasers},
   Journal = {Optics Letters},
   Volume = {19},
   Number = {7},
   Pages = {472-474},
   Year = {1994},
   Abstract = {This paper presents a theoretical rate-equation model for
             forecasting the steady-state performance, injected pulse
             strength threshold for lasing, and stability of two-photon
             optical lasers. A numerical analysis is carried out to
             validate the theory.},
   Key = {Concannon94}
}

@booklet{Gauthier94,
   Author = {GAUTHIER, DJ},
   Title = {THE DYNAMICS OF OPTICAL-SYSTEMS - A RENAISSANCE OF THE
             1990S},
   Volume = {4},
   Number = {2},
   Pages = {1-+},
   Year = {1994},
   ISSN = {0938-9008},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1994PV93700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Key = {Gauthier94}
}

@booklet{Wu94,
   Author = {Wu, Q and Gauthier, DJ and Mossberg, TW},
   Title = {Optical resonance and coherent transients in dressed atomic
             systems},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {50},
   Number = {2 pt B},
   Pages = {1474-1478},
   Year = {1994},
   url = {http://dx.doi.org/10.1103/PhysRevA.50.1474},
   Abstract = {The transient excitation of dressed atom which are composite
             systems consisting of a light field and an atom was
             experimentally investigated. It was demonstrated that a
             secondary excitation field, weak compared to the dressing
             field, can be used to excite transitions of the composite
             light plus atom molecule. Parameter ranges were considered
             where the dynamics noted can be described simply in terms of
             the dynamics of monochromatically driven dressed atoms. Due
             to the complexity of bare-atom dynamics in the existence of
             bichromatic excitation, the aspect of dressed atom is
             particularly relevant. Steady-state extensions of the
             dressed-atom approach to treating bichromatic excitation may
             have application in different areas such as optical atom
             cooling and trapping.},
   Doi = {10.1103/PhysRevA.50.1474},
   Key = {Wu94}
}

@article{fds246295,
   Author = {GAUTHIER, DJ and CONCANNON, HM},
   Title = {INSTABILITIES IN 2-PHOTON LASERS},
   Journal = {CHAOS IN OPTICS},
   Volume = {2039},
   Pages = {198-205},
   Year = {1993},
   ISBN = {0-8194-1288-0},
   url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1993BZ77H00019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92},
   Key = {fds246295}
}

@booklet{Gauthier93,
   Author = {Gauthier, DJ},
   Title = {Alternate schemes for the coherent laser control of chemical
             reactions},
   Journal = {Journal of Chemical Physics},
   Volume = {99},
   Number = {3},
   Pages = {1618-1622},
   Year = {1993},
   ISSN = {0021-9606},
   Abstract = {Several schemes are presented for the coherent laser control
             of chemical reactions. They are based on the principle of
             interference between quantum mechanical excitation pathways
             first proposed by Brumer and Shapiro [Acc. Chem. Res. 22,
             407 (1989)]. The conclusion that these schemes may by useful
             for coherent laser control is based on the fact that, for
             each of the schemes, the quantum mechanical interference
             effect has been observed previously in nonlinear optical
             experiments; however, no attempt to control the interference
             was attempted in these experiments. © 1993 American
             Institute of Physics.},
   Key = {Gauthier93}
}

@booklet{Gauthier92,
   Author = {Gauthier, DJ and Wu, Q and Morin, SE and Mossberg,
             TW},
   Title = {Realization of a continuous-wave, two-photon optical
             laser},
   Journal = {Physical Review Letters},
   Volume = {68},
   Number = {4},
   Pages = {464-467},
   Year = {1992},
   ISSN = {0031-9007},
   Abstract = {We report the first observation of continuous-wave
             two-photon lasing in the optical regime, and demonstrate
             that its initiation requires the injection of a trigger
             pulse into the laser resonator. Successful operation of the
             two-photon laser relies on the use of a novel gain medium
             consisting of laser-driven, two-level atoms and the use of a
             high-finesse optical cavity to isolate the two-photon gain
             from competing processes. Threshold conditions for laser
             action are in good agreement with recent theoretical
             predictions.},
   Key = {Gauthier92}
}

@booklet{Agarwal91,
   Author = {Agarwal, GS and Zhu, YF and Gauthier, DJ and Mossberg,
             TW},
   Title = {Spectrum of radiation from two-level atoms under intense
             bichromatic excitation},
   Journal = {Journal Of The Optical Society Of America B-optical
             Physics},
   Volume = {8},
   Number = {5},
   Pages = {1163-1167},
   Year = {1991},
   Month = {May},
   Key = {Agarwal91}
}

@booklet{Zhang91,
   Author = {Zhang, JM and Gauthier, DJ and Huang, J and Mossberg,
             TW},
   Title = {Use of phase-noisy laser fields in the storage of optical
             pulse shapes in inhomogeneously broadened
             absorbers},
   Journal = {Opt. Lett.},
   Volume = {16},
   Number = {2},
   Pages = {103-105},
   Year = {1991},
   Month = {January},
   Key = {Zhang91}
}

@booklet{Mossberg91,
   Author = {Mossberg, TW and Lewenstein, M and Gauthier, DJ},
   Title = {Trapping and cooling of atoms in a vacuum perturbed in a
             frequency-dependent manner},
   Journal = {Physical Review Letters},
   Volume = {67},
   Number = {13},
   Pages = {1723-1726},
   Year = {1991},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/PhysRevLett.67.1723},
   Abstract = {We show that light-induced mechanical forces that act on
             atoms may be significantly enhanced and acquire novel
             physical character when the electromagnetic reservoir which
             mediates the atomic relaxation is colored (i.e., frequency
             dependent). © 1991 The American Physical
             Society.},
   Doi = {10.1103/PhysRevLett.67.1723},
   Key = {Mossberg91}
}

@booklet{Gauthier91,
   Author = {Gauthier, DJ and Zhu, Y and Mossberg, TW},
   Title = {Observation of linewidth narrowing due to coherent
             stabilization of quantum fluctuations},
   Journal = {Physical Review Letters},
   Volume = {66},
   Number = {19},
   Pages = {2460-2463},
   Year = {1991},
   Abstract = {Quantum fluctuations of an optical transition moment are
             observed to be suppressed by strong coherent excitation of a
             weak auxiliary transition. The stabilization is manifest
             through the appearance of subnatural linewidths in the
             resonance fluorescence spectrum and is due to coherent
             mixing of atomic states. Our results are in quantitative
             agreement with the predictions of L. M. Narducci et al.
             [Phys. Rev. A 42, 1630 (1990)].},
   Key = {Gauthier91}
}

@article{fds246302,
   Author = {Gauthier, DJ and Zhu, Y and Morin, SE and Wu, Q and Carmichael, HJ and Mossberg, TW},
   Title = {Time- and frequency-domain studies of multiatom vacuum Rabi
             splitting in a large cavity},
   Journal = {XVII International Conference on Quantum Electronics. Digest
             of},
   Pages = {186-187},
   Year = {1990},
   Abstract = {The first frequency- and time-domain observations of the
             resonant large cavity and multiatom vacuum Rabi splitting
             are reported. The transmission as a function of frequency
             (time) of a weak CW (pulsed) laser beam through a
             high-finesse (500), 1-cm, 7.5-GHz, free-spectral-range,
             confocal Fabry-Perot cavity containing 850-1400 barium atoms
             has been measured. A plot of cavity intensity throughput as
             a function of the frequency of the CW input beam is shown
             and discussed. The spectrum, which represents the
             transmission function of the cavity, provides a way to
             calculate the transient response of the atom-cavity
             transmission based on linear systems theory. Equivalently,
             the same transient response of the transmission is predicted
             in terms of the quantized atom-cavity interaction. In either
             case, a damped oscillatory response is expected. To study
             this case, the temporal profile of a weak, smooth, ≅8-ns
             pulse after transmission through the cavity in a case where
             the number of Ba atoms within the cavity resulted in a large
             frequency-domain splitting was recorded. Excellent agreement
             with linear systems theory is observed.},
   Key = {fds246302}
}

@booklet{Zhu90,
   Author = {Zhu, Y and Wu, Q and Lezama, A and Gauthier, DJ and Mossberg,
             TW},
   Title = {Resonance fluorescence of two-level atoms under strong
             bichromatic excitation},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {41},
   Number = {11},
   Pages = {6574-6576},
   Year = {1990},
   ISSN = {1050-2947},
   url = {http://dx.doi.org/10.1103/PhysRevA.41.6574},
   Abstract = {We have measured the emission spectrum of two-level-like Ba
             atoms driven by two strong, equal-amplitude fields with
             frequency separation 2. The spectrum consists of a series of
             peaks with an essentially constant spacing and alternating
             linewidths. These features differ qualitatively from the
             characteristic triplet spectrum observed in the case of
             strong monochromatic excitation. Certain features of the
             observed spectrum such as its comblike structure can be
             motivated in terms of the energy spectrum of atom
             bichromatic-field product states. Other features, such as
             the alternating linewidths, require more subtle analysis. ©
             1990 The American Physical Society.},
   Doi = {10.1103/PhysRevA.41.6574},
   Key = {Zhu90}
}

@booklet{Gauthier90,
   Author = {Gauthier, DJ and Malcuit, MS and Gaeta, AL and Boyd,
             RW},
   Title = {Polarization bistability of counterpropagating laser
             beams},
   Journal = {Physical Review Letters},
   Volume = {64},
   Number = {15},
   Pages = {1721-1724},
   Year = {1990},
   ISSN = {0031-9007},
   Abstract = {We have observed bistability in the states of polarization
             of laser beams counterpropagating through sodium vapor. No
             external feedback is provided; the beams interact solely
             through four-wave mixing processes.},
   Key = {Gauthier90}
}

@booklet{Zhu90a,
   Author = {Zhu, Y and Gauthier, DJ and Morin, SE and Wu, Q and Carmichael, HJ and Mossberg, TW},
   Title = {Vacuum rabi splitting as a feature of linear-dispersion
             theory: Analysis and experimental observations},
   Journal = {Physical Review Letters},
   Volume = {64},
   Number = {21},
   Pages = {2499-2502},
   Year = {1990},
   ISSN = {0031-9007},
   Abstract = {The spectral and temporal response of an optical cavity
             resonantly coupled to an ensemble of barium atoms has been
             investigated experimentally. The empty-cavity transmission
             resonances are found to split in the presence of the atoms
             and, under these conditions, the cavity's temporal response
             is found to be oscillatory. These effects may be viewed as a
             manifestation of a vacuum-field Rabi splitting, or as a
             simple consequence of the linear absorption and dispersion
             of the intracavity atoms.},
   Key = {Zhu90a}
}

@article{fds322484,
   Author = {Boyd, RW and Gauthier, DJ and Kauranen, M and Malcuit, MS and Tompkin,
             WR},
   Title = {Polarization properties of phase conjugation by degenerate
             four-wave mixing in saturable absorbers},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {1060},
   Pages = {58-65},
   Year = {1989},
   Month = {August},
   url = {http://dx.doi.org/10.1117/12.951728},
   Abstract = {Dye molecules held rigidly in solid hosts display unusual
             polarization properties that can be exploited to produce
             nearly perfect vector phase conjugation with high
             sensitivity. © SPIE.},
   Doi = {10.1117/12.951728},
   Key = {fds322484}
}

@booklet{Gauthier89,
   Author = {Gauthier, DJ and Boyd, RW and Jungquist, RK and Lisson, JB and Voci,
             LL},
   Title = {Phase-conjugate fizeau interferometer},
   Journal = {Opt. Lett.},
   Volume = {14},
   Number = {6},
   Pages = {323-325},
   Year = {1989},
   Month = {March},
   Key = {Gauthier89}
}

@article{fds44133,
   Author = {D.J. Gauthier and M.S. Malcuit and R.W. Boyd},
   Title = {Bistability and chaos of counterpropagating laser
             beams},
   Pages = {395 - 399},
   Booktitle = {Coherence and Quantum Optics VI},
   Editor = {J.H. Eberly and L. Mandel and E. Wolf},
   Year = {1989},
   Key = {fds44133}
}

@article{fds44134,
   Author = {R.W. Boyd and A.L. Gaeta and D.J. Gauthier and M.S.
             Malcuit},
   Title = {Bistability and chaotic instabilities of laser beams
             counterpropagating through sodium vapor},
   Pages = {164 - 166},
   Booktitle = {Laser Spectroscopy IX},
   Editor = {M.S. Feld and J.E. Thomas and A. Mooradian},
   Year = {1989},
   Key = {fds44134}
}

@article{fds246301,
   Author = {Kauranen, M and Gauthier, DJ and Malcuit, MS and Boyd,
             RW},
   Title = {Theory of vector phase conjugation by two-photon-resonant
             degenerate four-wave mixing},
   Pages = {106-107},
   Year = {1989},
   Abstract = {A semiclassical theory of phase conjugation by
             two-photon-resonant degenerate four-wave mixing has been
             developed. The theory treats both the tensor nature of the
             interaction and the effects of saturation of the atomic
             system. An S → S two-photon transition has been
             considered, and the coupling strength for the generation of
             the conjugate wave has been calculated for arbitrary pump
             and probe beam polarizations and arbitrary pump intensities.
             Results for high and low intensities are shown and
             discussed.},
   Key = {fds246301}
}

@booklet{Kauranen89,
   Author = {Kauranen, M and Gauthier, DJ and Malcuit, MS and Boyd,
             RW},
   Title = {Polarization properties of optical phase conjugation by
             two-photon resonant degenerate four-wave
             mixing},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {40},
   Number = {4},
   Pages = {1908-1917},
   Year = {1989},
   ISSN = {1050-2947},
   url = {http://dx.doi.org/10.1103/PhysRevA.40.1908},
   Abstract = {We develop a semiclassical theory of the polarization
             properties of phase conjugation by two-photon resonant
             degenerate four-wave mixing. The theory includes the effects
             of saturation by the pump waves. We solve the density-matrix
             equations of motion in steady state for a nonlinear medium
             consisting of stationary atoms with a ground and excited
             state connected by two-photon transitions. As an
             illustration of the general results, we consider an S0S0
             two-photon transition, which is known to lead to perfect
             polarization conjugation in the limit of third-order theory.
             We show that the fidelity of the polarization-conjugation
             process is degraded for excessively large pump intensities.
             The degradation can occur both due to transfer of population
             to the excited state and due to nonresonant Stark shifts.
             Theoretical results are compared to those of a recent
             experiment [Malcuit, Gauthier, and Boyd, Opt. Lett. 13, 663
             (1988)]. © 1989 The American Physical Society.},
   Doi = {10.1103/PhysRevA.40.1908},
   Key = {Kauranen89}
}

@booklet{Malcuit88,
   Author = {Malcuit, MS and Gauthier, DJ and Boyd, RW},
   Title = {Vector phase conjugation by two-photon-resonant degenerate
             four-wave mixing},
   Journal = {Opt. Lett.},
   Volume = {13},
   Number = {8},
   Pages = {663-665},
   Year = {1988},
   Month = {August},
   Key = {Malcuit88}
}

@booklet{Gauthier88,
   Author = {Gauthier, DJ and Malcuit, MS and Boyd, RW},
   Title = {Polarization instabilities of counterpropagating laser beams
             in sodium vapor},
   Journal = {Physical Review Letters},
   Volume = {61},
   Number = {16},
   Pages = {1827-1830},
   Year = {1988},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/PhysRevLett.61.1827},
   Abstract = {We have observed temporal instabilities in the polarizations
             of counterpropagating laser beams in atomic sodium vapor.
             For intensities slightly above the instability threshold,
             the polarizations fluctuate periodically. For higher
             intensities, the fluctuations are chaotic and the system
             evolves on a strange attractor whose fractal dimension
             increases with increasing laser intensity. © 1988 The
             American Physical Society.},
   Doi = {10.1103/PhysRevLett.61.1827},
   Key = {Gauthier88}
}

@article{fds44132,
   Author = {M.S. Malcuit and D.J. Gauthier and J.J. Maki and R.W.
             Boyd},
   Title = {Competition effects among nolinear optical
             processes},
   Booktitle = {Laser Spectroscopy VIII},
   Publisher = {Springer-Verlag, Berlin},
   Editor = {W. Persson and S. Svanberg},
   Year = {1987},
   Key = {fds44132}
}

@booklet{Boyd87,
   Author = {Boyd, RW and Malcuit, MS and Gauthier, DJ and Rzaewski,
             K},
   Title = {Competition between amplified spontaneous emission and the
             four-wave-mixing process},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {35},
   Number = {4},
   Pages = {1648-1658},
   Year = {1987},
   ISSN = {1050-2947},
   url = {http://dx.doi.org/10.1103/PhysRevA.35.1648},
   Abstract = {Competition between amplified spontaneous emission (ASE) and
             the four-wave-mixing (FWM) process has been observed under
             conditions of two-photon resonant excitation of the sodium
             3d level. The nature of the competition is that the FWM
             process is able to prevent the occurrence of ASE, even
             though the gain of the ASE process calculated in the absence
             of competition effects is much larger than that of FWM. The
             ASE is suppressed because the fields generated by the FWM
             process create a new excitation pathway connecting the
             ground and 3d levels, and under quite general conditions
             this pathway interferes destructively with that due solely
             to the applied laser field. These effects are modeled
             theoretically by solving perturbatively the density-matrix
             equations of the atomic system, thereby determining the
             population in the upper level and the nonlinear polarization
             of the medium. The coupling between the various optical
             fields due to the nonlinear polarization is described by
             coupled amplitude equations. The solution to these equations
             predicts that when the wave-vector mismatch is not too large
             the fields evolve spatially to reach steady-state values,
             and that the population excited to the 3d level by the total
             steady-state optical field is much smaller than that due to
             the incident laser field alone. We have observed
             experimentally the suppression of ASE by FWM and have
             observed that this suppression does not occur when the
             medium is excited with counterpropagating beams that cannot
             efficiently excite the FWM process. In addition, we have
             conducted a series of experiments that shows that the degree
             of suppression of ASE depends on the intensity and focusing
             characteristics of the incident laser as expected on the
             basis of our theoretical model. © 1987 The American
             Physical Society.},
   Doi = {10.1103/PhysRevA.35.1648},
   Key = {Boyd87}
}

@booklet{Malcuit87,
   Author = {Malcuit, MS and Gauthier, DJ and Boyd, RW},
   Title = {Competition between four-wave mixing and amplified
             spontaneous emission},
   Journal = {Hyperfine Interactions},
   Volume = {37},
   Number = {1-4},
   Pages = {125-139},
   Year = {1987},
   ISSN = {0304-3843},
   url = {http://dx.doi.org/10.1007/BF02395707},
   Abstract = {There has recently been considerable interest in nonlinear
             optical interactions in which two different processes
             compete with one another. In this paper, we review some
             recent work in this area, and describe the results of our
             own investigation of competition between four-wave mixing
             and amplified spontaneous emission. We find that under
             two-photon excitation of the sodium 3d level, new optical
             frequency components can be generated either by amplified
             spontaneous emission at the 3d→3p transition frequency or
             by a resonantly enhanced four-wave mixing process. We have
             observed competition between these two processes, resulting
             in the suppression of amplified spontaneous emission. The
             transfer of population to the 3d level is inhibited by the
             destructive interference between two different pathways
             connecting the ground and upper levels. © 1987 J.C. Baltzer
             A.G. Scientific Publishing Company.},
   Doi = {10.1007/BF02395707},
   Key = {Malcuit87}
}

@booklet{Gauthier87,
   Author = {Gauthier, DJ and Narum, P and Boyd, RW},
   Title = {Observation of deterministic chaos in a phase-conjugate
             mirror},
   Journal = {Physical Review Letters},
   Volume = {58},
   Number = {16},
   Pages = {1640-1643},
   Year = {1987},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/PhysRevLett.58.1640},
   Abstract = {Deterministic chaos in the intensity of the beam produced by
             a barium titanate self-pumped phase-conjugate mirror has
             been observed. The correlation exponent of the strange
             attractor is found to depend on the crystal orientation and
             to lie within the range 1.2 to 2.4, and the order-two Renyi
             entropy is found to increase with increasing laser intensity
             and to be as large as 22 bits/sec. A standard model of
             self-pumped phase conjugation due to four-wave mixing has
             been generalized to include time dependence. This model
             predicts frequency shifts and chaotic behavior for the
             reflectivity. © 1987 The American Physical
             Society.},
   Doi = {10.1103/PhysRevLett.58.1640},
   Key = {Gauthier87}
}

@booklet{Gauthier86b,
   Author = {Gauthier, DJ and Narum, P and Boyd, RW},
   Title = {Simple, compact, high-performance permanent-magnet faraday
             isolator},
   Journal = {Opt. Lett.},
   Volume = {11},
   Number = {10},
   Pages = {623-625},
   Year = {1986},
   Month = {October},
   Key = {Gauthier86b}
}

@article{fds44129,
   Author = {P. Narum and D.J. Gauthier and R.W. Boyd},
   Title = {Instabilities in a self-pumped phase conjugate
             mirror},
   Pages = {298 - 301},
   Booktitle = {Optical Bistability III},
   Publisher = {Springer-Verlag, Berlin},
   Editor = {H.M. Gibbs and P. Mandel and N. Peyghambarian and S.D.
             Smith},
   Year = {1986},
   Key = {fds44129}
}

@article{fds44130,
   Author = {R.W. Boyd and D.J. Gauthier and M.S. Malcuit},
   Title = {Instabilities in the propagation of laser beams through
             atomic vapors},
   Pages = {334 - 336},
   Booktitle = {Optical Instabilities},
   Publisher = {Cambridge University Press, New York},
   Editor = {R.W. Boyd and M.G. Raymer and L.M. Narducci},
   Year = {1986},
   Key = {fds44130}
}

@article{fds246447,
   Author = {Boyd, RW and Gaeta, AL and Gauthier, DJ and Malcuit, MS and Narum,
             P},
   Title = {INSTABILITIES IN FOUR-WAVE MIXING.},
   Journal = {Proceedings of SPIE - The International Society for Optical
             Engineering},
   Volume = {667},
   Pages = {156-162},
   Year = {1986},
   ISBN = {0892527021},
   Abstract = {Recent research on instabilities in the four-wave mixing
             process is summarized. The four-wave mixing process can
             cause a laser beam to become unstable to the growth of new
             frequency components as the beam propagates through a
             nonlinear medium. Similar instabilities can occur in more
             complicated optical systems such as lasers and bistable
             optical devices. The nature of the instability is very
             different for nonlinearities resulting from one- and
             two-photon resonances in the susceptibility describing
             four-wave mixing. The four wave mixing process can lead to
             chaotic behavior in a self-pumped phase conjugate
             mirror.},
   Key = {fds246447}
}

@booklet{Benda85,
   Author = {Benda, JA and Gauthier, DJ and Boyd, RW},
   Title = {Transient sum-frequency generation in resonant three-level
             media},
   Journal = {Physical Review A - Atomic, Molecular, and Optical
             Physics},
   Volume = {32},
   Number = {6},
   Pages = {3461-3466},
   Year = {1985},
   ISSN = {1050-2947},
   url = {http://dx.doi.org/10.1103/PhysRevA.32.3461},
   Abstract = {Resonantly enhanced sum-frequency generation of pulsed laser
             radiation is treated theoretically for the case of a
             three-level system. The density-matrix equations of motion
             are solved using second-order, time-dependent perturbation
             theory with the inclusion of transient effects. The energy
             and spectrum of the generated radiation are calculated as
             functions of laser detunings, laser pulse lengths, and
             temporal overlap of the laser pulses. The tuning
             characteristics and output pulse characteristics are found
             to differ qualitatively depending on whether or not the
             excitation pulses satisfy the adiabatic following criteria
             generalized for the case of a three-level atom. © 1985 The
             American Physical Society.},
   Doi = {10.1103/PhysRevA.32.3461},
   Key = {Benda85}
}

@booklet{Malcuit85,
   Author = {Malcuit, MS and Gauthier, DJ and Boyd, RW},
   Title = {Suppression of amplified spontaneous emission by the
             four-wave mixing process},
   Journal = {Physical Review Letters},
   Volume = {55},
   Number = {10},
   Pages = {1086-1089},
   Year = {1985},
   ISSN = {0031-9007},
   url = {http://dx.doi.org/10.1103/PhysRevLett.55.1086},
   Abstract = {Two-photon-resonant excitation of the sodium 3d level can
             lead to the generation of new frequencies either by
             amplified spontaneous emission at the 3d'3p transition
             frequency or by a resonantly enhanced four-wave mixing
             process. Competition between these two processes has been
             observed. The four-wave mixing process can suppress
             amplified spontaneous emission by preventing the excitation
             of the 3d level due to an interference between two different
             pathways connecting the ground (3s) and 3d states. © 1985
             The American Physical Society.},
   Doi = {10.1103/PhysRevLett.55.1086},
   Key = {Malcuit85}
}

@booklet{Krasinski85,
   Author = {Krasinski, J and Gauthier, DJ and Malcuit, MS and Boyd,
             RW},
   Title = {2-photon conical emission},
   Journal = {Optics Communications},
   Volume = {54},
   Number = {4},
   Pages = {241-245},
   Year = {1985},
   ISSN = {0030-4018},
   Abstract = {A two-photon resonantly enhanced four-wave mixing (FWM)
             process leading to the conical emission of two new frequency
             components has been observed in atomic sodium vapor. A dye
             laser tuned close to the 3s → 3d two-photon allowed
             transition produces broad-band emission near the frequencies
             of the 3d → 3p and 3p → 3s transitions. This
             radiation is emitted in the forward direction in the form of
             cones surrounding the transmitted laser beam. The dependence
             of the cone angle on the emission wavelength and atomic
             number density is in excellent agreement with the
             predictions of a model that ascribes the origin of the
             conical emission to a phase-matched four-wave mixing
             process. © 1985.},
   Key = {Krasinski85}
}

@article{fds304565,
   Author = {Krasinski, J and Gauthier, DJ and Malcuit, MS and Boyd,
             RW},
   Title = {Two-photon conical emission},
   Journal = {Optics Communications},
   Volume = {54},
   Number = {4},
   Pages = {241-245},
   Year = {1985},
   ISSN = {0030-4018},
   Abstract = {A two-photon resonantly enhanced four-wave mixing (FWM)
             process leading to the conical emission of two new frequency
             components has been observed in atomic sodium vapor. A dye
             laser tuned close to the 3s → 3d two-photon allowed
             transition produces broad-band emission near the frequencies
             of the 3d → 3p and 3p → 3s transitions. This radiation
             is emitted in the forward direction in the form of cones
             surrounding the transmitted laser beam. The dependence of
             the cone angle on the emission wavelength and atomic number
             density is in excellent agreement with the predictions of a
             model that ascribes the origin of the conical emission to a
             phase-matched four-wave mixing process. ©
             1985.},
   Key = {fds304565}
}

@booklet{Boyd84,
   Author = {R.W. Boyd and D.J. Gauthier and J. Krasinski and M.S.
             Malcuit},
   Title = {Continuously tunable sum-frequency generation involving
             rydberg states},
   Series = {AIP Conference Proceedings},
   Number = {119},
   Pages = {356 -- 360},
   Booktitle = {Laser Techniques in the Extreme Ultraviolet},
   Publisher = {American Institute of Physics, New York},
   Editor = {S.E. Harris and T.B. Lucatorto},
   Year = {1984},
   Key = {Boyd84}
}

@article{fds318448,
   Author = {Boyd, RW and Gauthier, DJ and Krasinski, J and Malcuit,
             MS},
   Title = {CONTINUOUSLY TUNABLE SUM-FREQUENCY GENERATION INVOLVING
             SODIUM RYDBERG STATES.},
   Pages = {93-94},
   Year = {1984},
   Key = {fds318448}
}

@booklet{Boyd84a,
   Author = {Boyd, RW and Gauthier, DJ and Krasinski, J and Malcuit,
             MS},
   Title = {CONTINUOUSLY TUNABLE SUM-FREQUENCY GENERATION INVOLVING
             SODIUM RYDBERG STATES.},
   Journal = {IEEE Journal of Quantum Electronics},
   Volume = {QE-20},
   Number = {9},
   Pages = {1074-1078},
   Year = {1984},
   url = {http://dx.doi.org/10.1109/JQE.1984.1072522},
   Abstract = {Broadly tunable sum-frequency generation has been observed
             in a vapor of atomic sodium in the presence of a dc electric
             field. This field induces a chi **(**2**) nonlinearity which
             is resonantly enhanced when the sum frequency corresponds to
             the energy separation between the ground state and an atomic
             Rydberg state. In a vapor of number density 4 multiplied by
             10**1**4 cm** minus **3, we obtain an energy conversion
             efficiency as large as 3 multiplied by 10** minus **4 and a
             chi **(**2**) as large as 1. 2 multiplied by 10** minus **8
             ESU. We have also observed sum-frequency generation in the
             absence of an applied dc field, and we relate these
             observations to mechanisms that are proposed to explain this
             effect.},
   Doi = {10.1109/JQE.1984.1072522},
   Key = {Boyd84a}
}

@article{fds42878,
   Author = {D.J. Gauthier and J. Krasinski and R.W. Boyd},
   Title = {A novel technique for resonantly enhanced sum-frequency
             generation involving Rydberg atomic states},
   Pages = {517 - 522},
   Booktitle = {Coherence and Quantum Optics V},
   Publisher = {Plenum, New York},
   Editor = {L. Mandel and E. Wolf},
   Year = {1983},
   Key = {fds42878}
}

@booklet{Gauthier83,
   Author = {Gauthier, DJ and Krasinski, J and Boyd, RW},
   Title = {Observation of resonantly enhanced sum-frequency generation
             involving sodium rydberg states},
   Journal = {Opt. Lett.},
   Volume = {8},
   Number = {4},
   Pages = {211-213},
   Year = {1983},
   Key = {Gauthier83}
}


%% Papers Accepted   
@article{fds246264,
   Author = {Gauthier, DJ and Wildfeuer, CF and Guilbert, H and Stipčević, M and Christensen, B and Kumor, D and Kwiat, P and McCusker, K and Brougham,
             T and Barnett, SM},
   Title = {Quantum key distribution using hyperentangled time-bin
             states},
   Journal = {Optics InfoBase Conference Papers},
   Editor = {N. Bigelow and J. Eberly},
   Year = {2013},
   Month = {December},
   url = {http://www.phy.duke.edu/~qelectron/pubs/GauthierQIMAug23-2013-Paper.pdf},
   Abstract = {We describe our progress on achieving quantum key
             distribution with high photon efficiency and high rate using
             hyperentanglement. Methods of securing time-bin states and
             classical error correction appropriate for our
             high-dimension protocols will be discussed. © OSA
             2013.},
   Key = {fds246264}
}


%% Papers Submitted   
@article{fds220526,
   Author = {D.P. Rosin and D. Rontani and D.J. Gauthier},
   Title = {Synchronization of coupled Boolean phase oscillators,'
             submitted for publication},
   Year = {2013},
   Month = {November},
   url = {http://arxiv.org/abs/1311.2996},
   Key = {fds220526}
}

@article{fds220527,
   Author = {M. Stipcevic and D.J. Gauthier},
   Title = {Precise Monte Carlo simulation of single-photon detectors
             with active quenching},
   Year = {2013},
   Month = {September},
   Key = {fds220527}
}