Performance analysis of different photon-mediated entanglement generation schemes under optical dephasing and spectral diffusion

TL;DR

This paper compares three photon-mediated entanglement schemes for solid-state quantum emitters under realistic noise, providing practical guidelines for optimizing entanglement fidelity and measurement strategies.

Contribution

It offers a comparative analysis of entanglement schemes considering optical dephasing and spectral diffusion, identifying optimal methods and measurement parameters for high-fidelity entanglement.

Findings

Identifies the best entanglement scheme under different noise conditions.

Calculates measurement parameters for optimal entanglement fidelity.

Shows how filtering improves entanglement quality.

Abstract

Solid-state quantum emitters, such as quantum dots, color centers, rare-earth dopants, and organic molecules, offer qubit systems that integrate well with chip-scale photonic and electronic devices. To fully harness their potential for quantum applications requires the generation of entanglement between two remote qubits with high fidelity and efficiency. In this article, we compare the performance of three common photon-mediated entanglement schemes under realistic noise for solid-state quantum emitters, including optical dephasing and spectral diffusion. We identify the optimal scheme across different noise regimes and calculate the measurement parameters needed to achieve the highest entanglement fidelity at a given rate. Additionally, we explore the effects of temporal and spectral filtering in enhancing entanglement fidelity. Our findings provide practical guidelines for selecting optimal entanglement schemes and outline the measurement strategies for achieving better entanglement fidelity.