文献类型：期刊文献

英文题名：Optical nonreciprocity using light shifts

作者：Zhan, Yifan[1];Zhang, Shicheng[1];Gong, Shangqing[1,2,3,4];Niu, Yueping[1,2,3]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]Shanghai Engn Res Ctr Hierarch Nanomat, Shanghai 200237, Peoples R China;[3]Shanghai Frontiers Sci Ctr Optogenet Tech Cell Met, Shanghai 200237, Peoples R China;[4]Hefei Natl Lab, Hefei 230088, Peoples R China

年份：2025

卷号：111

期号：2

外文期刊名：PHYSICAL REVIEW A

收录：;EI(收录号：20250817898307);WOS:【SCI-EXPANDED(收录号:WOS:001447561200002)】；

基金：This work was supported by the National Natural Sci-ence Foundation of China (Grants No. 12034007, No. 12004112, and No. 12374327) , Major Project of Shanghai Municipal Education Commission (Grant No. 2023ZKZD39) , Program of Shanghai Academic Research Leader (Grant No. 21XD1400700) , and Innovation Program for Quantum Sci-ence and Technology (Grant No. 2021ZD0300802) .

语种：英文

外文关键词：Atoms - Density (optical) - Integrated optics - Optical depth - Quantum electronics - Quantum optics

摘要：Hot atoms have been demonstrated to be a promising platform for the manipulation of optical fields. However, the thermal motion of atoms results in the broadening of spectral lines, which is accompanied by a reduction in the light-atom interaction. In this study we propose a nonreciprocal optical system that significantly enhances the strength of the light-atom interaction by unidirectionally compensating for the broadening associated with two-photon processes, employing inhomogeneous light shifts in a A system. Utilizing the density matrix formalism, we provide a detailed description of the dynamics and examine the nonreciprocity in two distinct detuned regions. In the far-detuned region, a room-temperature nonreciprocity with an isolation of 37.3 dB and a transmission of 0.99 can be achieved. Furthermore, in the near-resonance region, the ultrabroad bandwidth of the nonreciprocal window can reach gigahertz. Our findings pave the way for the realization of high-performance optical nonreciprocity and present opportunities for applications in integrated optics and quantum networks.