Dissipative chaos and steady state of open Tavis-Cummings dimer

TL;DR

This paper explores how dissipative chaos manifests in an open Tavis-Cummings dimer system, revealing steady states, thermalization, and quantum signatures linked to classical chaos, with implications for quantum optics experiments.

Contribution

It provides a detailed analysis of dissipative chaos in a coupled atom-photon system, highlighting the quantum-classical correspondence and steady state properties.

Findings

Identification of dynamical phases and chaos onset

Steady state formation in chaotic regimes

Subsystem thermalization with chaos-dependent temperature

Abstract

We consider a coupled atom-photon system described by the Tavis-Cummings dimer (two coupled cavities) in the presence of photon loss and atomic pumping, to investigate the quantum signature of dissipative chaos. The appropriate classical limit of the model allows us to obtain a phase diagram identifying different dynamical phases, especially the onset of chaos. Both classically and quantum mechanically, we demonstrate the emergence of a steady state in the chaotic regime and analyze its properties. The interplay between quantum fluctuation and chaos leads to enhanced mixing dynamics and dephasing, resulting in the formation of an incoherent photonic fluid. The steady state exhibits an intriguing phenomenon of subsystem thermalization even outside the chaotic regime; however, its effective temperature increases with the degree of chaos. Moreover, the statistical properties of the steady state show a close connection with the random matrix theory. Finally, we discuss the experimental relevance of our findings, which can be tested in cavity and circuit quantum electrodynamics setups.