摘要
奇异点是非厄米系统中的特殊点,奇异点附近的参数空间会出现很多新奇的物理现象。超表面是物理学近年来兴起的一个研究热点,人们基于超表面的平台已经设计实现了大量性能优越的器件。超表面的出现为研究奇异点提供了一个易操作的平台,通过精确控制超表面的结构参数,可以方便地研究奇异点周围的参数空间。研究超表面中的奇异点也为研究新的物理规律提供了基础的平台,文中首先介绍了奇异点和超表面中的奇异点的基本理论,之后介绍了超表面中奇异点的最新研究进展,最后对目前该领域亟待解决的问题进行了分析总结,对该领域的发展进行了展望。
Exceptional points are special points in non-Hermitian systems,and there are many novel physical phenomena in the parameter space near the exceptional points.In recent years,metasurface has been a popular topic in physics.A large number of devices with superior performance have been designed based on metasurface platform.The appearance of the metasurface provides an easy platform for the study of exceptional points.By precisely controlling the structural parameters of the metasurface,it is convenient to study the parameter space of the exceptional points.The research on exceptional points in non-Hermitian metasurface also provides a foundation platform for studying new laws of physics.Firstly,the basic theory of exceptional points and the exceptional point in metasurface was introduced.Secondly,the recent research on the exceptional points in metasurface was introduced.Finally,the current problems needing to be solved were analyzed and the development of the field in the future was prospected.
作者
齐慧欣
王晓晓
胡小永
龚旗煌
Qi Huixin;Wang Xiaoxiao;Hu Xiaoyong;Gong Qihuang(Institute of Physics,Peking University,Beijing 100871,China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2020年第9期23-34,共12页
Infrared and Laser Engineering
基金
国家重点研究开发项目(2018YFB2200403)
国家自然科学基金(61775003,11734001,91950204,11527901)
北京市科技计划课题(Z191100007219001)。
关键词
奇异点
非厄米系统
超表面
exceptional points
non-Hermitian systems
metasurface
