飞秒激光直写玻璃基三维波导拓扑光子学结构(特邀)  

Three⁃Dimensional Waveguide Topological Photonic Structures in Glass Fabricated by Femtosecond Laser Direct Writing(Invited)

作　　者：王睿琦 李础 李焱[1,2,3] Wang Ruiqi;Li Chu;Li Yan(State Key Laboratory for Artificial Microstructure and Mesoscopic Physics,School of Physics,Peking University,Beijing 100871,China;Frontiers Science Center for Nano-Optoelectronics,Peking University,Beijing 100871,China;Hefei National Laboratory,Hefei 230088,Anhui,China)

机构地区：[1]北京大学物理学院人工微结构和介观物理国家重点实验室,北京100871 [2]北京大学纳光电子前沿科学中心,北京100871 [3]合肥国家实验室,安徽合肥230088

出　　处：《光学学报》2024年第17期197-213,共17页Acta Optica Sinica

基　　金：国家自然科学基金(12134001,11527901,61590933);国家重点研发计划(2018YFB1107205,2016YFA0301302);科技创新2030——“量子通信与量子计算机”重大项目(2021ZD0301500)。

摘　　要：飞秒激光直写技术具有优异的三维直写能力,可以灵活精确地构造和调控复杂波导阵列的结构和参数,是制备拓扑光子元器件的重要手段。综述了利用飞秒激光直写技术在玻璃内部制备的各类光波导拓扑结构,包括打破和不打破时间反演对称性的周期性晶格以及非厄米拓扑光波导系统,介绍了相应的研究进展,总结了面临的挑战,并提出了可能的解决方案。Significance Topological photonics represents a forefront research field that integrates topological concepts from condensed matter physics,particularly topological insulators,into optical systems.These insulators,originally derived from the quantum Hall effect,denote materials where electron conduction is confined to their surfaces,exhibiting immunity to dissipation and backscattering even amidst defects and disorder.Leveraging the ease of control in photonic systems,topological photonics structures provide a convenient experimental platform for investigating related topological phenomena from condensed matter physics,such as the integer and spin quantum Hall effects.Furthermore,topological photonics fosters exploration into pioneering topological concepts,including higher-order topological insulators,anomalous Floquet topological insulators,Anderson topological insulators,and fractal topologies.Photonics has introduced innovative physical phenomena to topology,such as non-Hermitian and nonlinear topological photonics.Integrating topological theory into optics has introduced a new dimension of freedom to optical systems,offering novel techniques for stable transmission and manipulation of light fields and quantum states in integrated photonic devices.This encompasses robust state transformations under topological protection,topologically safeguarded quantum entanglement states,and advancements in topological quantum computation.Femtosecond laser direct writing(FLDW)technology provides exceptional 3D direct writing capabilities,enabling the fabrication of three-dimensional optical waveguides with arbitrary cross-sections and the construction of complex waveguide arrays.Waveguide devices made with FLDW have become crucial research platforms for optical communication,optical quantum computing,quantum algorithms,optical quantum storage,optical quantum simulation,topological photonics,and non-Hermitian systems.Since the paraxial equation of electromagnetic wave propagation in waveguides mirrors the single-particle Sc

关 键 词：飞秒激光直写 时间反演对称性破缺周期晶格 手性对称性周期晶格 非厄米拓扑 

分 类 号：TN249[电子电信—物理电子学]