Photonic indistinguishability characterization and optimization for cavity-based single-photon source

• URL: http://arxiv.org/abs/2404.11193v1
• Date: Wed, 17 Apr 2024 09:18:24 GMT
• Title: Photonic indistinguishability characterization and optimization for cavity-based single-photon source
• Authors: Miao Cai, Mingyuan Chen, Jiangshan Tang, Keyu Xia,
• Abstract summary: Indistinguishability of single photons from independent sources is critically important for scalable quantum technologies. This work may pave the way for designing and engineering reliable and scalable photon-based quantum technologies.
• Score: 1.143707646428782
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Indistinguishability of single photons from independent sources is critically important for scalable quantum technologies. We provide a comprehensive comparison of single-photon indistinguishability of different kinds of cavity quantum electrodynamics (CQED) systems by numerically simulating Hong-Ou-Mandel (HOM) two-photon interference. We find that the CQED system using nature atoms exhibit superiority in indistinguishability, benefiting from the inherently identical features. Moreover, a $\Lambda-$type three-level atoms show essential robust against variation of various system parameters because it exploits the two ground states with considerable smaller decay rates for single-photon generation. Furthermore, a machine learning-based framework is proposed to significantly and robustly improve single-photon indistinguishability for non-identical two CQED systems. This work may pave the way for designing and engineering reliable and scalable photon-based quantum technologies.

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