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.
作者
李浩珍
曾然
胡淼
许蒙蒙
周雪芳
夏秀文
许静平
羊亚平
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,Hangzhou 310018,China;Zhejiang Province Key Laboratory of Quantum Technology and Device,Zhejiang University,Hangzhou 310027,China;Key Laboratory of Advanced Micro-Structured Materials of Ministry of Education,School of Physics Science and Engineering,Tongji University,Shanghai 200092,China;Institute of Atomic and Molecular Physics and Functional Materials,School of Mathematics and Physics,Jinggangshan University,Ji'an 343009,China)
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)。
