Quantum signatures in quench from chaos to superradiance

Abstract

The driven-dissipative Dicke model features normal, superradiant, and lasing steady-states that may be regular or chaotic. We report quantum signatures of chaos in a quench protocol from the lasing states. Within the framework of a classical mean-field perspective, once quenched, the system relaxes either to the normal or to the superradiant state. Quench-from-chaos, unlike quench from a regular lasing state, exhibits erratic dependence on control parameters. In the quantum domain this sensitivity implies an effect that is similar to universal conductance fluctuations.

10 pages, 10 figures (including SM)

References in corpus (2)

• Cold atoms in cavity-generated dynamical optical potentials
• The nonlinear semiclassical dynamics of the unbalanced, open Dicke model

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