Super-correlated radiance in nonlinear photonic waveguides

Wang, Zhihai and Jaako, Tuomas and Kirton, Peter and Rabl, Peter (2020) Super-correlated radiance in nonlinear photonic waveguides. Physical Review Letters, 124 (21). 213601. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.124.213601)

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Abstract

We study the collective decay of two-level emitters coupled to a nonlinear waveguide, for example, a nanophotonic lattice or a superconducting resonator array with strong photon-photon interactions. Under these conditions, a new decay channel into bound photon pairs emerges, through which spatial correlations between emitters are established by regular interference as well as interactions between the photons. We derive an effective Markovian theory to model the resulting decay dynamics of an arbitrary distribution of emitters and identify collective effects beyond the usual phenomena of super- and subradiance. Specifically, in the limit of many close-by emitters, we find that the system undergoes a supercorrelated decay process where all the emitters are either in the excited state or in the ground state but not in any of the intermediate states. The predicted effects can be probed in state-of-the-art waveguide QED experiments and provide a striking example of how the dynamics of open quantum systems can be modified by many-body effects in a nonharmonic environment.

  • Item type:Article
    ID code:72544
    Dates:
    Date
    Event
    29 May 2020
    Published
    6 May 2020
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:03 Jun 2020 13:38
    Last modified:09 Apr 2024 01:28
    URI:https://strathprints.strath.ac.uk/id/eprint/72544
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