Yan Qiuchen, Zhao Boheng, Zhou Rong, Ma Rui, Lyu Qinghong, Chu Saisai, Hu Xiaoyong, Gong Qihuang
State Key Laboratory for Mesoscopic Physics & Department of Physics, Collaborative Innovation Center of Quantum Matter & Frontiers Science Center for Nano-Optoelectronics, Beijing Academy of Quantum Information Sciences, Peking University, Beijing 100871, P. R. China.
Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education, Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing 100081, P. R. China.
Nanophotonics. 2023 Mar 9;12(13):2247-2271. doi: 10.1515/nanoph-2022-0775. eCollection 2023 Jun.
Non-Hermitian photonics and topological photonics, as new research fields in optics, have attracted much attention in recent years, accompanying by a great deal of new physical concepts and novel effects emerging. The two fields are gradually crossed during the development process and the non-Hermitian topological photonics was born. Non-Hermitian topological photonics not only constantly produces various novel physical effects, but also shows great potential in optical device applications. It becomes an important part of the modern physics and optics, penetrating into different research fields. On one hand, photonics system can introduce artificially-constructed gain and loss to study non-Hermitian physics. Photonics platform is an important methods and ways to verify novel physical phenomena and promote the development of non-Hermitian physics. On the other hand, the non-Hermitian topological photonics provides a new dimension for manipulating topological states. Active and dissipate materials are common in photonic systems; therefore, by using light pump and dissipation of photonic systems, it is expected to promote further development of topological photonics in device applications. In this review article, we focus on the recent advances and applications on non-Hermitian topological photonics, including the non-Hermitian topological phase transition and skin effect, as well as the applications emerging prosperously in reconfigurable, nonlinear and quantum optical systems. The possible future research directions of non-Hermitian topological photonics are also discussed at the end. Non-Hermitian topological photonics can have great potential in technological revolution and have the capacity of leading the development of both physics and technology industry.
非厄米光子学和拓扑光子学作为光学领域的新兴研究方向，近年来备受关注，伴随着大量新的物理概念和新奇效应不断涌现。这两个领域在发展过程中逐渐交叉，非厄米拓扑光子学应运而生。非厄米拓扑光子学不仅不断产生各种新奇的物理效应，还在光学器件应用中展现出巨大潜力。它已成为现代物理学和光学的重要组成部分，并渗透到不同的研究领域。一方面，光子学系统可以引入人工构建的增益和损耗来研究非厄米物理。光子学平台是验证新奇物理现象和推动非厄米物理发展的重要手段和途径。另一方面，非厄米拓扑光子学为操控拓扑态提供了一个新维度。有源和耗散材料在光子学系统中很常见；因此，通过利用光子学系统的光泵浦和损耗，有望推动拓扑光子学在器件应用方面的进一步发展。在这篇综述文章中，我们聚焦于非厄米拓扑光子学的最新进展和应用，包括非厄米拓扑相变和趋肤效应，以及在可重构、非线性和量子光学系统中蓬勃兴起的应用。文章结尾还讨论了非厄米拓扑光子学未来可能的研究方向。非厄米拓扑光子学在技术革命中具有巨大潜力，有能力引领物理学和技术产业的发展。
