典型文献
Higher-order valley vortices enabled by synchronized rotation in a photonic crystal
文献摘要：
Synchronized rotation of unit cells in a periodic structure provides a novel design perspective for manipulation of band topology.We then design a two-dimensional version of higher-order topological insulator(HOTI)by such rotation in a triangular photonic lattice with C3 symmetry.This HOTI supports the hallmark zero-dimensional corner states and,simultaneously,the one-dimensional edge states.We also find that our photonic corner states carry chiral orbital angular momenta locked by valleys,whose wave functions are featured by the phase vortex(singularity)positioned at the maximal Wyckoff points.Moreover,when excited by a fired source with various frequencies,the valley topological states of both one-dimensional edges and zero-dimensional corners emerge simultaneously.Extendable to higher or synthetic dimensions,our paper provides access to a chiral vortex plat-form for HOTI realizations in the terahertz photonic system.
文献关键词：
中图分类号：
作者姓名：
RUI ZHOU;HAI LIN;YANJIE WU;ZHIFENG LI;ZIHAO YU;Y.LIU;DONG-HUI XU
作者机构：
College of Physics Science and Technology,Central China Normal University,Wuhan 430079,China;School of Physics and Electronic Sciences,Hubei University,Wuhan 430062,China;Lanzhou Center for Theoretical Physics,Key Laboratory of Theoretical Physics of Gansu Province,Lanzhou University,Lanzhou 730000,China;Department of Physics,Chongqing University,Chongqing 400044,China
文献出处：
引用格式：
[1]RUI ZHOU;HAI LIN;YANJIE WU;ZHIFENG LI;ZIHAO YU;Y.LIU;DONG-HUI XU-.Higher-order valley vortices enabled by synchronized rotation in a photonic crystal)[J].光子学研究（英文）,2022(05):1244-1254
A类：
HOTI,Extendable
B类：
Higher,order,vortices,enabled,by,synchronized,rotation,photonic,crystal,Synchronized,unit,cells,periodic,structure,provides,novel,design,perspective,manipulation,band,topology,We,then,two,dimensional,version,higher,topological,insulator,such,triangular,lattice,C3,symmetry,This,supports,hallmark,zero,states,simultaneously,also,find,that,carry,chiral,orbital,momenta,locked,valleys,whose,wave,functions,are,featured,phase,vortex,singularity,positioned,maximal,Wyckoff,points,Moreover,when,excited,fired,source,various,frequencies,both,edges,corners,emerge,synthetic,dimensions,paper,access,plat,form,realizations,terahertz,system
AB值：
0.615046
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