Chiral transmission by an open evolution trajectory in a non-Hermitian system
作者机构：Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074China. Zhejiang LabHangzhou 311121China. CREOLCollege of Optics and PhotonicsUniversity of Central FloridaOrlandoFlorida 32816USA. Department of PhysicsThe University of Hong KongHong KongChina. School of Electrical and Electronic EngineeringNanyang Technological University50 Nanyang AvenueSingapore 639798Singapore. Photonics InitiativeAdvanced Science Research CenterCity University of New YorkNew YorkNY 10031USA. Shenzhen Huazhong University of Science and Technology Research InstituteShenzhen 518063China
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2024年第13卷第4期
页 面：628-636页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 0702[理学-物理学]
基 金：National Natural Science Foundation of China(Grant No.12074137) National Key Research and Development Project of China(Grant No.2021YFB2801903) Science,Technology and Innovation Commission of Shenzhen Municipality(Grant No.JCYJ20220530161010023) State Key Laboratory of Advanced Technology for Materials Synthesis and Processing(Wuhan University of Technology) D.N.C.was partially supported by AFOSR MURI(FA9550-18-1-0235)
摘 要：Exceptional points(EPs),at which two or more eigenvalues and eigenstates of a resonant system coalesce,are associated with non-Hermitian Hamiltonians with gain and/or loss *** encircling of EPs has received significant interest in recent years,as it has been shown to lead to highly nontrivial phenomena,such as chiral transmission in which the final state of the system depends on the encircling ***,chiral transmission for a pair of eigenmodes has been realized by establishing a closed dynamical trajectory in parity-time-(PT-)or anti-PT-symmetric *** chiral transmission of symmetry-broken modes,more accessible in practical photonic integrated circuits,has been realized by establishing a closed trajectory encircling EPs in anti-PTsymmetric systems,the demonstrated transmission efficiency is very low due to path-dependent ***,we demonstrate chiral dynamics in a coupled waveguide system that does not require a closed ***,we explore an open trajectory linking two infinite points having the same asymptotic eigenmodes(not modes in PT-and anti-PT-symmetric systems),demonstrating that this platform enables high-efficiency chiral transmission,with each eigenmode localized in a single *** concept is experimentally implemented in a coupled silicon waveguide system at telecommunication *** work provides a new evolution strategy for chiral dynamics with superior performance,laying the foundation for the development of practical chiral-transmission devices.
维普期刊数据库