On-demand production of entangled photon pairs via quantum-dot biexciton control

TL;DR

This paper proposes a pulsed laser method to prepare quantum dots in a biexciton state, enabling a near-perfect, on-demand source of entangled photon pairs with high efficiency.

Contribution

It introduces a novel pulsed laser scheme for preparing quantum dots in a biexciton state with 100% population, achieving near-perfect entangled photon emission.

Findings

Achieves 99.5% entangled photon emission rate

Provides a high-rate, on-demand entangled photon source

Demonstrates near-perfect biexciton state preparation

Abstract

A pulsed laser scenario, designed to prepare an appropriately chosen self-assembled quantum dot with 100% population in a biexciton state, is proposed. The ensuing radiative emission would provide a near perfect (99.5%) high rate, on-demand, source of entangled photons.