非互易拓扑光子学研究进展(特邀)  

Progress of Nonreciprocal Topological Photonics(Invited)

作　　者：周裕鸿 郑悠[1] 徐力[1] 喻平 高振 王卓远 ZHOU Yuhong;ZHENG You;XU Li;YU Ping;GAO Zhen;WANG Zhuoyuan(School of Electronics and Information Engineering,Ningbo University of Technology,Ningbo 315211,China;Southern University of Science and Technology,Shenzhen 518055,China)

机构地区：[1]宁波工程学院电信学院,宁波315211 [2]南方科技大学,深圳518055

出　　处：《光子学报》2023年第8期30-41,共12页Acta Photonica Sinica

基　　金：红外物理国家重点实验室开放课题基金(No.SKLIP2021006);浙江省教育厅科研项目(No.Y202147586);铁电压电材料与器件湖北省重点实验室开放课题项目(No.K202106);浙江省自然科学基金(Nos.LY20F050006,LY18F020025,Y19F020034,LY21F040004);宁波市自然科学基金(No.2019A610106);宁波市2025重大专项(No.2020Z021)。

摘　　要：光的传播通常是互易的,传统的互易性光学器件面临光学衍射极限等问题,限制了其性能的进一步提升。非互易性光学器件能够实现光的单向可控传输,非互易拓扑光子态具有抗背向散射、免疫障碍物和缺陷等多种优异的物理性质,因而在光集成电路、非线性光学等多个领域具有潜在的应用价值。本文聚焦并回顾了非互易拓扑光子学的应用价值和研究进展,分别介绍了通过旋磁材料光子晶体、基于磁表面等离子激元、利用光学非线性效应和基于时间调制等不同的途径和手段实现非互易光子拓扑态的理论依据和研究进展,比较各自特点,并对其未来发展趋势和面临的关键问题进行了分析和展望。The propagation of light is generally reciprocal.Optical reciprocity,also known as temporal inversion symmetry,is essentially the existence of reciprocal solutions supported by Maxwell's equations.However,traditional reciprocal optical components suffer from problems such as the optical diffraction limit,which limits their further development toward high performance.In recent years,with the rapid development of topological photonics,it has been found that topological photon states have one-way transmission properties with forward conduction and reverse blocking state.At the same time,local structural defects will not influence global properties in optical topology,therefore,non-reciprocal topological photon states have many excellent physical properties,such as immunity to obstacles and defects,which can ensure that the one-way transmission has strong robustness and consequently promises potential applications such as optical integrated circuits and nonlinear optics.Magneto-optical photonic crystals based on gyromagnetic materials are the earliest topological optical structures to realize non-reciprocal topological photon states.They are also the most commonly used topological optical structures to study the generation,interaction and novel topological optical phenomena of topological photon states,which still contain a series of physical mechanisms worthy of further exploration.However,an external magnetic field is required,which affects the integration of optical devices,the frequency is limited to the microwave,and the gyromagnetic material has a weak response to the magnetic field,so it is still difficult to realize the integer quantum Hall effect of light,thus limiting its practical application prospects.Magnetoplasma is a simple material with non-reciprocal,rotational and homogeneous medium.The maximum non-reciprocity can be achieved by optimizing the permittivity tensor or the permeability tensor since the strength of the non-reciprocity depends on the relative strength of the diagonal tensor elements and

关 键 词：非互易性 拓扑光子学 光子晶体 旋磁材料 磁表面等离子激元 非线性效应 

分 类 号：O469[理学—凝聚态物理]