Phase dependence of the unnormalized second-order photon correlation function

TL;DR

This paper studies how the phase difference of driving lasers influences the second-order photon correlation in a multi-qubit microcavity system, revealing phase-dependent photon statistics and controllable two-photon correlations.

Contribution

It demonstrates phase-dependent manipulation of photon correlations in a multi-qubit microcavity, a novel control mechanism not previously explored.

Findings

Photon statistics depend on the phase difference of driving lasers.

Higher photon correlations and intensities are achievable through phase control.

Photon statistics show steady-state oscillations and asymmetries.

Abstract

We investigate the resonant quantum dynamics of a multi-qubit ensemble in a microcavity. Both the quantum-dot subsystem and the microcavity mode are pumped coherently. We found that the microcavity photon statistics depends on the phase difference of the driving lasers which is not the case for the photon intensity at resonant driving. This way, one can manipulate the two-photon correlations. In particular, higher degrees of photon correlations and, eventually, stronger intensities are obtained. Furthermore, the microcavity photon statistics exhibits steady-state oscillatory behaviors as well as asymmetries.