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Dynamic modulated single-photon routing

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【Author】 Hao-Zhen Li;Ran Zeng;Miao Hu;Mengmeng Xu;Xue-Fang Zhou;Xiuwen Xia;Jing-Ping Xu;Ya-Ping Yang;School of Communication Engineering, Hangzhou Dianzi University;Zhejiang Province Key Laboratory of Quantum Technology and Device, Zhejiang University;Key Laboratory of Advanced Micro-Structured Materials of Ministry of Education,School of Physics Science and Engineering, Tongji University;Institute of Atomic and Molecular Physics and Functional Materials, School of Mathematics and Physics,Jinggangshan University;

【通讯作者】曾然;胡淼;

【机构】 School of Communication Engineering, Hangzhou Dianzi University； Zhejiang Province Key Laboratory of Quantum Technology and Device, Zhejiang University； Key Laboratory of Advanced Micro-Structured Materials of Ministry of Education,School of Physics Science and Engineering, Tongji University； Institute of Atomic and Molecular Physics and Functional Materials, School of Mathematics and Physics,Jinggangshan University；

【摘要】 The dynamic control of single-photon scattering in a pair of one-dimensional waveguides mediated by a time-modulated atom–cavity system is investigated. Two cases, where the waveguides are coupled symmetrically or asymmetrically to the atom–cavity system, are discussed in detail. The results show that such time-modulated atom–cavity configuration can behave as a dynamical tunable directional single-photon router. The photons with different frequencies can dynamically be routed from the incident waveguide into any ports of the other with a 100% probability via adjusting the modulated amplitude or phases of the time-modulated atom–cavity coupling strengths, associate with the help of the asymmetrical waveguide–cavity couplings. Furthermore, the influence of dissipation on the routing capability is investigated. It is shown that the present single-photon router is robust against the dissipative process of the system, especially the atomic dissipation. These results are expected to be applicable in quantum information processing and design quantum devices with dynamical modulation.更多还原

【Abstract】 The dynamic control of single-photon scattering in a pair of one-dimensional waveguides mediated by a time-modulated atom–cavity system is investigated. Two cases, where the waveguides are coupled symmetrically or asymmetrically to the atom–cavity system, are discussed in detail. The results show that such time-modulated atom–cavity configuration can behave as a dynamical tunable directional single-photon router. The photons with different frequencies can dynamically be routed from the incident waveguide into any ports of the other with a 100% probability via adjusting the modulated amplitude or phases of the time-modulated atom–cavity coupling strengths, associate with the help of the asymmetrical waveguide–cavity couplings. Furthermore, the influence of dissipation on the routing capability is investigated. It is shown that the present single-photon router is robust against the dissipative process of the system, especially the atomic dissipation. These results are expected to be applicable in quantum information processing and design quantum devices with dynamical modulation.更多还原

【关键词】 single-photon router； dynamical modulation； waveguide-QED；
【Key words】 single-photon router； dynamical modulation； waveguide-QED；

【基金】 Project supported by China Postdoctoral Science Foundation (Grant No. 2023M732028);the Fund from Zhejiang Province Key Laboratory of Quantum Technology and Device (Grant No. 20230201);the Fundamental Research Funds for the Provincial Universities of Zhejiang Province, China (Grant No. GK199900299012-015);the Natural Science Foundation of Zhejiang Province, China (Grant No. LY21A040003);the National Natural Science Foundation of China (Grant Nos. 12164022, 12174288, and 12274326);the Natural Science Foundation of Jiangxi Province, China (Grant No. 20232BAB201044)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2023年12期

【分类号】O431.2
【下载频次】2

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