Many-body superradiance and dynamical mirror symmetry breaking in waveguide QED

• URL: http://arxiv.org/abs/2209.12970v4
• Date: Mon, 24 Jul 2023 20:54:06 GMT
• Title: Many-body superradiance and dynamical mirror symmetry breaking in waveguide QED
• Authors: Silvia Cardenas-Lopez, Stuart J. Masson, Zoe Zager, Ana Asenjo-Garcia
• Abstract summary: We investigate whether an array of emitters coupled to a one-dimensional bath undergoes Dicke superradiance. Many-body superradiance occurs because the initial fluctuation that triggers the emission is amplified throughout the decay process. Superradiant bursts may thus be a smoking gun for the generation of correlated photon states of exotic quantum statistics.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The many-body decay of extended collections of two-level systems remains an open problem. Here, we investigate whether an array of emitters coupled to a one-dimensional bath undergoes Dicke superradiance. This is a process whereby a completely inverted system becomes correlated via dissipation, leading to the release of all the energy in the form of a rapid photon burst. We derive the minimal conditions for the burst to happen as a function of the number of emitters, the chirality of the waveguide, and the single-emitter optical depth, both for ordered and disordered ensembles. Many-body superradiance occurs because the initial fluctuation that triggers the emission is amplified throughout the decay process. In one-dimensional baths, this avalanchelike behavior leads to a spontaneous mirror symmetry breaking, with large shot-to-shot fluctuations in the number of photons emitted to the left and right. Superradiant bursts may thus be a smoking gun for the generation of correlated photon states of exotic quantum statistics.

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