典型文献
Coexisting valley and pseudo-spin topological edge states in photonic topological insulators made of distorted Kekulé lattices
文献摘要：
Photonic topological insulators protected by the lattice spatial symmetry(e.g.,inversion and rotation symmetry)mainly support single type edge state,interpreted by either valley or pseudo-spin.Here,we demonstrate theo-retically,numerically,and experimentally that a type of judiciously designed two-dimensional Kekulé photonic crystal with time reversal symmetry can possess topological valley and pseudo-spin edge states in different fre-quency bands.Topologically robust transportation of both the valley and pseudo-spin edge states was confirmed by measuring the transmission of straight and z-shaped interface supported edge mode and comparing with bulk modes in the microwave frequency regime.In addition,we show that due to the distinct topological origins,valley and pseudo-spin edge states can be distinguished by examining their end-scattering into the free space.Our sys-tem provides an alternative way in manipulating electromagnetic waves with additional degree-of-freedom,which has potential applications for robust and high-capacity waveguiding and multi-mode dividing.
文献关键词：
中图分类号：
作者姓名：
GUOCHAO WEI;ZHENZHEN LIU;LICHENG WANG;JIANUUAN SONG;JUN-JUN XIAO
作者机构：
Shenzhen Engineering Laboratory of Aerospace Detection and Imaging,College of Electronic and Information Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China;Shenzhen Suntak Multilayer PCB Co.,Ltd.,Shenzhen 518115,China
文献出处：
引用格式：
[1]GUOCHAO WEI;ZHENZHEN LIU;LICHENG WANG;JIANUUAN SONG;JUN-JUN XIAO-.Coexisting valley and pseudo-spin topological edge states in photonic topological insulators made of distorted Kekulé lattices)[J].光子学研究（英文）,2022(04):999-1010
A类：
Kekul,retically,waveguiding
B类：
Coexisting,valley,pseudo,spin,topological,edge,states,photonic,insulators,made,distorted,lattices,Photonic,protected,by,spatial,symmetry,inversion,rotation,mainly,single,type,interpreted,either,Here,we,demonstrate,theo,numerically,experimentally,that,judiciously,designed,two,dimensional,crystal,reversal,can,possess,different,bands,Topologically,robust,transportation,both,was,confirmed,measuring,transmission,straight,shaped,interface,supported,comparing,bulk,modes,microwave,frequency,regime,In,show,due,distinct,origins,be,distinguished,examining,their,end,scattering,into,space,Our,sys,tem,provides,alternative,way,manipulating,electromagnetic,waves,additional,degree,freedom,which,has,potential,applications,high,capacity,multi,dividing
AB值：
0.578781
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