Enhanced photon correlations due to strong laser-atom-cavity coupling

TL;DR

This paper studies how strong laser-atom-cavity coupling enhances photon correlations and flux in a microcavity system, revealing increased steady-state correlations and photon flux compared to weaker coupling.

Contribution

It demonstrates that stronger laser-atom-cavity coupling significantly increases photon correlations and emission flux in a microcavity system, providing new insights into quantum light sources.

Findings

Larger steady-state photon correlations at stronger coupling

Enhanced second- and third-order photon correlation functions

Increased photon flux with stronger laser-atom-cavity coupling

Abstract

We investigate the resonant quantum dynamics of a laser-pumped real or artificial two-level single-atom system embedded in a leaking microcavity. We found that for stronger laser-atom-cavity couplings the generated microcavity photons exhibit larger steady-state correlations. In particular, the second- and third-order photon correlation functions are greater than the corresponding ones obtained for an incoherent light source, respectively. Furthermore, the emitted microcavity photon flux is enhanced in comparison to weaker coupling cases.