Observation of topological rainbow in non-Hermitian systems

作     者：路翠翠 赵闻 张胜 郑焱基 王晨阳 李耀华 刘永椿 胡小永 杭志宏 Cuicui Lu;Wen Zhao;Sheng Zhang;Yanji Zheng;Chenyang Wang;Yaohua Li;Yong-Chun Liu;Xiaoyong Hu;Zhi Hong Hang

作者机构：Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of EducationBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic SystemsSchool of PhysicsBeijing Institute of TechnologyBeijing 100081China School of Physical Science and TechnologyProvincial Key Laboratory for Thin Films and Institute for Advanced StudySoochow UniversitySuzhou 215006China State Key Laboratory of Low-Dimensional Quantum PhysicsDepartment of PhysicsFrontier Science Center for Quantum InformationTsinghua UniversityBeijing 100084China State Key Laboratory for Mesoscopic Physics&Department of PhysicsCollaborative Innovation Center of Quantum Matter&Frontiers Science Center for Nano-optoelectronicsBeijing Academy of Quantum Information SciencesPeking UniversityBeijing 100871China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2023年第21卷第12期

页      面：97-102页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.12274031,12274315,92050110,11734001,91950204,and 92150302) the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) the National Key Research and Development Program of China(No.2018YFB2200403) the Beijing Institute of Technology Research Fund Program for Teli Young Fellows,and the Beijing Institute of Technology Science and Technology Innovation Plan Innovative Talents Science and Technology Funding Special Plan(No.2022CX01006) 

主　　题：topological rainbow non-Hermitian photonics photonic crystal slow-light effect 

摘      要：Topological photonic states have promising applications in slow light,photon sorting,and optical ***,realizing such states in non-Hermitian systems has been challenging due to their complexity and elusive *** this work,we have experimentally realized a topological rainbow in non-Hermitian photonic crystals by controlling loss in the microwave frequency range for what we believe is the first *** reveal that the lossy photonic crystal provides a reliable platform for the study of non-Hermitian photonics,and loss is also taken as a degree of freedom to modulate topological states,both theoretically and *** work opens a way for the construction of a nonHermitian photonic crystal platform,will greatly promote the development of topological photonic devices,and will lay a foundation for the real-world applications.