Real-time emission spectrum of a hybrid atom-optomechanical cavity

TL;DR

This paper provides a theoretical analysis of the real-time emission spectrum in a hybrid atom-optomechanical cavity, revealing how strong couplings and losses influence spectral features using a quantum trajectory approach.

Contribution

It introduces a dressed state model to accurately predict spectral peaks in a complex hybrid quantum system with mechanical and atomic interactions.

Findings

Dressed state picture explains spectral peaks and their relative heights.

Strong atom-cavity and optomechanical couplings significantly shape the emission spectrum.

Mechanical and spontaneous emission losses affect spectral features under weak damping conditions.

Abstract

We theoretically investigate the real-time emission spectrum of a two-level atom coupled to an optomechanical cavity (OMC). Using quantum trajectory approach we obtain the single-photon time-dependent spectrum in this hybrid system where the influence of a strong atom-cavity coupling and a strong optomechanical interaction are studied. We find a dressed state picture can explain the spectra by predicting the exact peak locations as well as the relative peak heights. In our analysis we also include the effect of mechanical losses (under weak mechanical damping limit) and single-photon loss through spontaneous emission from the two-level emitter.