Nonreciprocal transition between two nondegenerate energy levels  

作　　者：XUNWEI XU YANJUN ZHAO HUI WANG AIXI CHEN YU-XI LIU 

机构地区：[1]Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education,Key Laboratory for Matter Microstructure and Function of Hunan Province,Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications,Hunan Normal University,Changsha 410081,China [2]Department of Applied Physics,East China Jiaotong University,Nanchang 330013,China [3]Key Laboratory of Opto-electronic Technology,Ministry of Education,Beijing University of Technology,Beijing 100124,China [4]Center for Emergent Matter Science(CEMS),RIKEN,Wako,Saitama 351-0198,Japan [5]Department of Physics,Zhejiang Sci-Tech University,Hangzhou 310018,China [6]Institute of Microelectronics,Tsinghua University,Beijing 100084,China [7]Frontier Science Center for Quantum Information,Beijing 100084,China

出　　处：《Photonics Research》2021年第5期879-886,共8页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(12064010,11904013,11847165,11775190);Natural Science Foundation of Jiangxi Province(20192ACB21002);National Basic Research Program of China(973 Program)(2014CB921401);Tsinghua University Initiative Scientific Research Program;Tsinghua National Laboratory for Information Science and Technology(TNList)Crossdiscipline Foundation。

摘　　要：Stimulated emission and absorption are two fundamental processes of light–matter interaction, and the coefficients of the two processes should be equal. However, we will describe a generic method to realize the significant difference between the stimulated emission and absorption coefficients of two nondegenerate energy levels, which we refer to as a nonreciprocal transition. As a simple implementation, a cyclic three-level atom system, comprising two nondegenerate energy levels and one auxiliary energy level, is employed to show a nonreciprocal transition via a combination of synthetic magnetism and reservoir engineering. Moreover, a single-photon nonreciprocal transporter is proposed using two one-dimensional semi-infinite coupled-resonator waveguides connected by an atom with nonreciprocal transition effect. Our work opens up a route to design atom-mediated nonreciprocal devices in a wide range of physical systems.

关 键 词：transition. effect. reciprocal 

分 类 号：O437[机械工程—光学工程]