Observation of topological rainbow in non-Hermitian systems

被引：0

作者：

路翠翠 ^{[1
]}

赵闻 ^{[1
]}

张胜 ^{[2
]}

郑焱基 ^{[1
]}

王晨阳 ^{[3
]}

李耀华 ^{[3
]}

刘永椿 ^{[3
]}

胡小永 ^{[4
]}

杭志宏 ^{[2
]}

机构：

[1] 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

[2] School of Physical Science and Technology, Provincial Key Laboratory for Thin Films and Institute for Advanced Study, Soochow University

[3] State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Frontier Science Center for Quantum Information, Tsinghua University

[4] 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

来源：

Chinese Optics Letters | 2023年 / 21卷 / 12期

基金：

中国国家自然科学基金;

关键词：

D O I：

暂无

中图分类号：

O431.2 [量子光学];

学科分类号：

摘要：

Topological photonic states have promising applications in slow light, photon sorting, and optical buffering. However, realizing such states in non-Hermitian systems has been challenging due to their complexity and elusive properties. In this work, we have experimentally realized a topological rainbow in non-Hermitian photonic crystals by controlling loss in the microwave frequency range for what we believe is the first time. We reveal that the lossy photonic crystal provides a reliable platform for the study of non-Hermitian photonics, and loss is also taken as a degree of freedom to modulate topological states, both theoretically and experimentally. This work opens a way for the construction of a nonHermitian photonic crystal platform, will greatly promote the development of topological photonic devices, and will lay a foundation for the real-world applications.

引用

页码：101 / 106

页数：6

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