Quantum signatures in quench from chaos to superradiance

TL;DR

This paper investigates quantum signatures of chaos in a driven-dissipative Dicke model by analyzing how quenches from chaotic lasing states lead to erratic quantum behavior, revealing a connection to universal conductance fluctuations.

Contribution

It demonstrates quantum signatures of chaos in a quench protocol from lasing states within the Dicke model, linking classical chaos to quantum fluctuations.

Findings

Erratic dependence on control parameters after quench from chaos

Quantum effects analogous to universal conductance fluctuations

Distinct relaxation behavior from regular lasing states

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.