Correlated emission lasing in a single quantum dot embedded inside a bimodal photonic crystal cavity

TL;DR

This paper studies correlated emission lasing in a single quantum dot within a bimodal photonic crystal cavity, revealing noise suppression and entanglement generation through advanced quantum modeling.

Contribution

It introduces a non-perturbative polaron master equation approach to analyze phase dynamics and quantum noise suppression in correlated emission lasing.

Findings

Correlated emission suppresses quantum noise at low temperatures.

The system generates continuous-variable entanglement between cavity modes.

Enhanced understanding of exciton-phonon interactions in quantum dot lasing.

Abstract

We investigate the phenomenon of correlated emission lasing in a coherently driven single quantum dot coupled to a bimodal photonic crystal cavity, utilizing a master equation to describe the system dynamics. To account for exciton-phonon interactions, we incorporate a non-perturbative approach through a polaron transformed master equation. By analyzing fluctuations in the Hermitian operators associated with relative and average phase, we derive a Fokker-Planck equation to assess phase drift and diffusion coefficients, demonstrating that correlated emission suppresses quantum noise in the presence of exciton-phonon interaction at low temperature. Additionally, we calculate the single and two-photon excess emission rates (difference between emission and absorption rates) into the cavity modes and explore the generation of continuous-variable entanglement between these modes.