Phase dependence of the unnormalized second-order photon correlation function

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.

Phase‐Dependent Quantum Correlation in a Cavity‐Atom System

“…Moreover, this kind of phase difference is involved in interference control of medium absorption, measurement of spatial correlation and entanglement in many literatures . In the scheme here, we utilize this phase difference (driving‐field phase) to manipulate outputs of intracavity field at two ends of cavity mirrors to realize controllable quantum correlation, where dissipation of the system is controlled by modified intracavity EIT with a closed‐loop phase.…”

Superthermal photon bunching in terms of simple probability distributions

“…Superradiant coupling of the emitters in the gain medium has been reported to lead to g (2) -values far above the thermal value [14][15][16][17]. Also the phase difference of coherent laser driving can increase g (2) above 2 [18]. Another source that can produce superthermal light is the cathodoluminescence of an ensemble of nitrogen vacancy centers in nanodiamonds [19] or the resonance fluorescence of quantum dotmetal nanoparticles [20].…”