Exceptional point empowered near-field routing of hyperbolic polaritons  

奇异点赋能的双曲极化激元近场路由

作　　者：Zhiwei Guo Jiayue Jiang Yuqian Wang Jose Alvarez-Cuervo Aitana Tarazaga Martin-Luengo Shengyu Hu Jie Jiang Pablo Alonso Gonzalez Jiahua Duan Hong Chen 郭志伟;江佳悦;王宇倩;Jose Alvarez-Cuervo;Aitana Tarazaga Martin-Luengo;胡胜宇;姜杰;Pablo Alonso Gonzalez;段嘉华;陈鸿

机构地区：[1]MOE Key Laboratory of Advanced Micro-Structured Materials,School of Physics Science and Engineering,Tongji University,Shanghai 200092,China [2]Department of Physics,University of Oviedo,Oviedo 33003,Spain [3]Center of Research on Nanomaterials and Nanotechnology,CINN(CSIC-Universidad de Oviedo),El Entrego 33003,Spain [4]Center for Quantum Physics,Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE),School of Physics,Beijing Institute of Technology,Beijing 100081,China [5]Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic System,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Science Bulletin》2024年第22期3491-3495,共5页科学通报（英文版）

基　　金：partially supported by the National Key Research Program of China(2021YFA1400602 and 2023YFA1407600);the National Natural Science Foundation of China(12004284,12274325,and 12374294);the Shanghai Chenguang Plan(21CGA22)(H.C.&Z.W.G.);support from the Beijing Natural Science Foundation(Z240005);National Natural Science Foundation of China(12474027)。

摘　　要：Subwavelength-scale manipulation of electromagnetic waves forms the cornerstone of next-generation photonic devices and quantum information processing[1],where extensive efforts have focused on momentum-frequency dispersion through modification of the sizes,shape topology,and symmetry of the isofrequency contours(IFCs)[2,3].For instance,twisting of the multi-layers of stacked vdW materials results in a topological transition from open(hyperbolic-like)to closed(elliptical-like)IFCs(i.e.,control of the propagation wavefront).In contrast,the symmetry of IFCs,which is deeply rooted in the system symmetry,is more difficult to modulate[4].For example,hyperbolic polaritons exhibit four mirrorsymmetric beams in high-symmetry orthorhombic crystals,while asymmetric propagation of tilted hyperbolic shear polaritons only emerges in low-symmetry monoclinic crystals[3].

关 键 词：HYPERBOLIC SYMMETRY POLAR 

分 类 号：O441.4[理学—电磁学]