Publications [#303604] of Harold U. Baranger

Papers Published
  1. Zheng, H; Baranger, HU, Persistent quantum beats and long-distance entanglement from waveguide-mediated interactions., Physical Review Letters, vol. 110 no. 11 (March, 2013), pp. 113601 [1206.4442v2], [doi] .

    We study photon-photon correlations and entanglement generation in a one-dimensional waveguide coupled to two qubits with an arbitrary spatial separation. To treat the combination of nonlinear elements and 1D continuum, we develop a novel Green function method. The vacuum-mediated qubit-qubit interactions cause quantum beats to appear in the second-order correlation function. We go beyond the Markovian regime and observe that such quantum beats persist much longer than the qubit lifetime. A high degree of long-distance entanglement can be generated, increasing the potential of waveguide-QED systems for scalable quantum networking.