文献类型：期刊文献

英文题名：Thermal-motion-induced non-reciprocal quantum optical system

作者：Zhang, Shicheng[1];Hu, Yiqi[1];Lin, Gongwei[1];Niu, Yueping[1];Xia, Keyu[2,3,4];Gong, Jiangbin[5];Gong, Shangqing[1]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai, Peoples R China;[2]Nanjing Univ, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Nanjing, Jiangsu, Peoples R China;[3]Nanjing Univ, Sch Phys, Nanjing, Jiangsu, Peoples R China;[4]Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing, Jiangsu, Peoples R China;[5]Natl Univ Singapore, Dept Phys, Singapore, Singapore

年份：2018

卷号：12

期号：12

起止页码：744

外文期刊名：NATURE PHOTONICS

收录：;EI(收录号：20184406001905);WOS:【SCI-EXPANDED(收录号:WOS:000451458600012)】；

基金：This work was supported by the National Key Research and Development Program of China (grant no. 2017YFA0303703), the National Natural Science Foundation of China (grant nos. 11474092, 11774089 and 11674094) and Shanghai Natural Science Foundation (grant nos. 17ZR1442700 and 18ZR1410500).

语种：英文

外文关键词：Signal processing - Optical systems - Atoms - Locks (fasteners)

摘要：Magnetic-free optical non-reciprocal components, such as isolators and circulators, are highly desirable for on-chip optical signal processing(1,2) and quantum networks(3,4). However, their realization presents a fundamental difficulty due to the Lorentz reciprocity in most optical devices(5). In this study, we propose and experimentally realize optical non-reciprocity with atoms embedded in a ring cavity at room temperature. Random thermal motion of atoms, in the presence of a unidirectional control field, creates susceptibility-momentum locking, and subsequently a new type of chiral quantum optical system. Furthermore, we demonstrate strong non-reciprocity based on this chiral quantum system in the regime of collectively strong atom-cavity coupling. Our scheme provides a new routine towards the realization of chiral quantum optics and chip-compatible, non-magnetic optical non-reciprocity.