Emission characteristics of laser-driven dissipative coupled-cavity systems

TL;DR

This paper investigates the emission properties of a laser-driven, dissipative coupled-cavity system with Jaynes-Cummings nonlinearity, using numerical methods to analyze spectra and relate them to non-dissipative excitations.

Contribution

It introduces a detailed numerical analysis of emission spectra in dissipative coupled-cavity systems under different laser driving conditions, linking spectra to underlying quantum excitations.

Findings

Spectra can be interpreted to reveal non-dissipative system excitations

Numerical methods accurately solve the many-body master equation

Different laser driving schemes affect emission characteristics

Abstract

We consider a laser-driven and dissipative system of two coupled cavities with Jaynes-Cummings nonlinearity. In particular, we investigate both incoherent and coherent laser driving, corresponding to different experimental situations. We employ Arnoldi time evolution as a numerical tool to solve exactly the many-body master equation describing the non-equilibrium quantum system. We evaluate the fluorescence spectrum and the spectrum of the second-order correlation function of the emitted light field. Finally, we relate the measured spectra of the dissipative quantum system to excitations of the corresponding non-dissipative quantum system. Our results demonstrate how to interpret spectra obtained from dissipative quantum systems and specify what information is contained therein.