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

    Kinfung Ngan and Shuo Sun*

    • *Contact author: shuosun@colorado.edu

    Phys. Rev. A 112, 012424 – Published 24 July, 2025

    DOI: https://doi.org/10.1103/bpsj-16wq

    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.

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