Nontrivial coupling of light into a defect:the interplay of nonlinearity and topology
作者机构：The MOE Key Laboratory of Weak-Light Nonlinear PhotonicsTEDA Applied Physics Institute and School of PhysicsNankai UniversityTianjin 300457China Faculty of Civil EngineeringUniversity of ZagrebA.Kacica Miosica 2610000 ZagrebCroatia Nonlinear Physics CentreResearch School of PhysicsAustralian National UniversityCanberraACT 2601Australia Institute of Applied PhysicsRussian Academy of ScienceNizhny Novgorod 603950Russia Collaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuan 030006 ShanxiPR China Institut für PhysikUniversitat RostockAlbert-Einstein-Strasse 2318059 RostockGermany Center for Theoretical Physics of Complex SystemsInstitute for Basic Science(IBS)Daejeon 34126Republic of Korea Basic Science ProgramKorea University of Science and TechnologyDaejeon 34113Republic of Korea Department of Physics and AstronomySan Francisco State UniversitySan FranciscoCA 94132USA Department of PhysicsFaculty of ScienceUniversity of ZagrebBijenička c.3210000 ZagrebCroatia
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2020年第9卷第1期
页 面：646-655页
核心收录：
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
基 金：supported by the National Key R&D Program of China under Grant No.2017YFA0303800 the National Natural Science Foundation(11922408,91750204,11674180),PCSIRT the 111 Project(No.B07013)in China support in part by the Croatian Science Foundation Grant No.IP-2016-06-5885 SynthMagIA the QuantiXLie Center of Excellence,a project co-financed by the Croatian Government and European Union through the European Regional Development Fund-the Competitiveness and Cohesion Operational Programme(Grant KK.01.1.1.01.0004) supported by the Australian Research Council(DE19010043) supported by the Institute for Basic Science in Korea(IBS-R024-Y1) support from the Russian Foundation for Basic Research(grant No.19-52-12053)
主 题：nonlinearity topological coupling
摘 要：The flourishing of topological photonics in the last decade was achieved mainly due to developments in linear topological photonic ***,when nonlinearity is introduced,many intriguing questions *** example,are there universal fingerprints of the underlying topology when modes are coupled by nonlinearity,and what can happen to topological invariants during nonlinear propagation?To explore these questions,we experimentally demonstrate nonlinearity-induced coupling of light into topologically protected edge states using a photonic platform and develop a general theoretical framework for interpreting the mode-coupling dynamics in nonlinear topological *** on laser-written photonic Su-Schrieffer-Heeger lattices,our experiments show the nonlinear coupling of light into a nontrivial edge or interface defect channel that is otherwise not permissible due to topological *** theory explains all the observations ***,we introduce the concepts of inherited and emergent nonlinear topological phenomena as well as a protocol capable of revealing the interplay of nonlinearity and *** concepts are applicable to other nonlinear topological systems,both in higher dimensions and beyond our photonic platform.
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