Tunable single-photon nonreciprocal scattering and targeted router in a giant atom-waveguide system with chiral couplings  

作　　者：Xue-Jian Sun Wen-Xiao Liu Hao Chen Hong-Rong Li 

机构地区：[1]College of Physics and Telecommunication Engineering,Zhoukou Normal University,Zhoukou 466001,China [2]Department of Physics and Electronics,North China University of Water Resources and Electric Power,Zhengzhou 450046,China [3]College of Physics and Electronic Information Engineering,Qinghai Normal University,Xining 810008,China [4]Institute of Quantum Optics and Quantum Information,School of Physics,Xi'an Jiaotong University,Xi'an 710049,China

出　　处：《Communications in Theoretical Physics》2023年第3期38-47,共10页理论物理通讯（英文版）

摘　　要：We investigate the single-photon scattering properties of a driven three-level giant atom chirally coupled to two waveguides simultaneously in both the Markovian and the non-Markovian regimes.It is shown that under the Markovian limit,the chiral photon-atom interactions enable nonreciprocal scattering in a single waveguide and targeted photon routing with a probability of 100%in two waveguides,while the presence of the driving field and the giant atom structure introduce a more tunable parameter to manipulate the single-photon scattering behaviors.We also examine how the non-reciprocity and routing capability are influenced by the imperfect chirality and the atomic dissipation.In the non-Markovian regime,we show that the scattering behaviors are more complicated.The non-Markovicity induced non-reciprocity and photon routing are demonstrated in this paper.We believe that those results have potential applications in quantum network engineering.

关 键 词：three-level giant atom chiral waveguide nonreciprocal scattering single-photon router 

分 类 号：O431.2[机械工程—光学工程]