Observing half-integer topological winding numbers in non-Hermitian synthetic lattices

Abstract Non-Hermitian (NH) systems have revealed unique topological phenomena that are not observed in Hermitian counterparts, such as novel topology classifications and the NH skin effect. In periodic NH systems, eigenenergies become complex and exhibit windings in the complex plane, while eigenst...

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Bibliographic Details
Main Authors: Mu Yang, Yu-Wei Liao, Hao-Qing Zhang, Yue Li, Zhi-He Hao, Zheng-Wei Zhou, Xi-Wang Luo, Jin-Shi Xu, Chuan-Feng Li, Guang-Can Guo
Format: Article
Language:English
Published: Nature Publishing Group 2025-06-01
Series:Light: Science & Applications
Online Access:https://doi.org/10.1038/s41377-025-01909-8
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