Dramatic impact of pumping mechanism on photon entanglement in microcavity

TL;DR

This paper presents a theoretical study showing that the mechanism of pumping in quantum dot microcavities significantly influences photon entanglement and correlation times, with continuous pumping reducing entanglement.

Contribution

It provides an analytical theory demonstrating how different pumping mechanisms affect photon entanglement in quantum dot microcavities.

Findings

Continuous pumping quenches polarization entanglement

Pumping mechanism drastically alters photon correlation times

Analytical model explains the dependence of correlations on pumping

Abstract

A theory of entangled photons emission from quantum dot in microcavity under continuous and pulsed incoherent pumping is presented. It is shown that the time-resolved two-photon correlations drastically depend on the pumping mechanism: the continuous pumping quenches the polarization entanglement and strongly suppresses photon correlation times. Analytical theory of the effect is presented.