Fluorescence spectrum and thermalization in a driven coupled cavity array

Abstract

We calculate the fluorescence spectra of a driven lattice of coupled cavities. To do this, we extend methods of evaluating two-time correlations in infinite lattices to open quantum systems; this allows access to momentum resolved fluorescence spectrum. We illustrate this for a driven-dissipative transverse field anisotropic XY model. By studying the fluctuation dissipation theorem, we find the emergence of a quasi-thermalized steady state with a temperature dependent on system parameters; for blue detuned driving, we show this effective temperature is negative. In the low excitation density limit, we compare these numerical results to analytical spin-wave theory, providing an understanding of the form of the distribution function and the origin of quasi-thermalization.

12 pages, 6 figures

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Cited by in corpus (12)

• Spectral functions and negative density of states of a driven-dissipative nonlinear quantum resonator
• Many-Body Open Quantum Systems
• Driven-dissipative Ising Model: An exact field-theoretical analysis
• Evolution of two-time correlations in dissipative quantum spin systems: aging and hierarchical dynamics
• On the stability of the infinite Projected Entangled Pair Operator ansatz for driven-dissipative 2D lattices
• Pseudo-thermalization in driven-dissipative non-Markovian open quantum systems
• Strong-coupling limit of the driven dissipative light-matter interaction
• Time-reversal symmetry breaking and emergence in driven-dissipative Ising models
• Monitoring the resonantly driven Jaynes-Cummings oscillator by an external two-level emitter: A cascaded open-systems approach
• A modified quasi-classical analysis to capture the effects of strong interaction in open QED lattices
• Signatures of Quantum Phase Transitions in Driven Dissipative Spin Chains
• Probing the critical point of the Jaynes-Cummings second-order dissipative quantum phase transition