基于非厄密拓扑效应的无线传能与传感研究  

Wireless Power Transfer and Sensing Based on Non-Hermitian Topological Effects

作　　者：郭志伟[1,2] 胡胜宇 张海燕 王宇倩[1] 董丽娟 孙勇[1] 李云辉[1] 江海涛[1] 羊亚平[1] 陈鸿[1,2] Guo Zhiwei;Hu Shengyu;Zhang Haiyan;Wang Yuqian;Dong Lijuan;Sun Yong;Li Yunhui;Jiang Haitao;Yang Yaping;Chen Hong(Key Laboratory of Advanced Micro-Structure Materials,Ministry of Education,School of Physics Science and Engineering,Tongji University,Shanghai 200092,China;Shanxi Provincial Key Laboratory of Microstructure Electromagnetic Functional Materials,School of Physics and Electronic Science,Shanxi Datong University,Datong 037009,Shanxi,China)

机构地区：[1]同济大学物理科学与工程学院先进微结构材料教育部重点实验室,上海200092 [2]山西大同大学物理与电子科学学院微结构电磁功能材料山西省重点实验室,山西大同037009

出　　处：《光学学报》2023年第16期152-174,共23页Acta Optica Sinica

基　　金：国家重点研发计划(2021YFA1400602);国家自然科学基金(91850206,11974261,12004284);中央引导地方科技发展资金项目(YDZJSX2021B011);中央高校基本科研业务费专项资金(22120210579);上海市教育发展基金和上海市教育委员会“晨光计划”项目(21CGA22)。

摘　　要：近年来受拓扑绝缘体启发而兴起的拓扑光子学有力地促进了电磁波调控和新型波功能器件的研究。光子人工带隙材料因其丰富的物态调控机制和高度定制化的设计自由度成为了研究拓扑光子学和研制鲁棒性光子器件的重要平台。本文主要综述了周期性二聚化以及准周期性Harper光子拓扑链中光子与人工带隙材料的相互作用,揭示了非厄密物理、宇称-时间对称转变和拓扑相变对能带和带隙的作用规律,以及光场本征态的调控和传输机制。围绕实际的共振耦合技术,介绍了非厄密拓扑物理启发下的具有拓扑保护特性的高性能近场无线传能和传感方案,并对非厄密拓扑物理对于无线传能和传感的发展将起到的作用进行了展望。Significance Modulating the motions of photons through topological structures plays a primarily vital role in both scientific research and practical applications,which leads to a new but thriving study direction,namely topological photonics.Flexible topological phases and robust topological states provide an unprecedented perspective to the abundant physics phenomena generated by vector electromagnetic fields with spin-1.On the other hand,photonic artificial microstructures,such as metamaterials and photonic crystals,can be gradually perceived as substitutes and even upgrades of some complex topological models in condensed matter physics,which mainly rely on their rich state control mechanisms and highly customized design degrees of freedom.In this research process,some properties of optical topological states are utilized to overcome some engineering problems,including exploiting robustness to eliminate the scattering losses caused by defects and disorders.In view of the early success of Hermitian topological systems,recent focus has been laid on non-Hermitian topological systems described by non-Hermitian Hamiltonians.Especially,when the Hamiltonian of the system satisfies the parity-time(PT)symmetry,its eigenvalues are pure real,which corresponds to a unique non-Hermitian system with highly sensitive exceptional points(EPs)in the parameter space and novel skin effects in edge modes.In the past decade,wireless power transfer(WPT)and sensing become a hotspot,which triggers immense research interest in practical applications,including mobile phones,logistic robots,medical-implanted devices,and electric vehicles.For a standard WPT system,it is mainly composed of two coupled coil resonators,which are placed on the source and receiver sides,respectively.However,there are some aspects of these conventional WPT applications that should be noted.For example,the limitation of the coupling of evanescent waves and the inherent sensitivity to the transmission distance or structural disturbance restrict the structure sizes

关 键 词：光学器件 非厄密物理 光拓扑结构 拓扑相变 无线传能 无线传感 

分 类 号：O59[理学—应用物理]