Simultaneous Observation of Topological Edge State and Exceptional Point in an Open and Non-Hermitian System
Mesoscale and Nanoscale Physics
2018-09-26 v1
Abstract
This paper reports on the experimental observation of topologically protected edge state and exceptional point in an open and Non-Hermitian system. While the theoretical underpinning is generic to wave physics, the simulations and experiments are performed for an acoustic system whose structure has non-trivial topological properties that can be characterized by the Chern number provided that a synthetic dimension is introduced. Unidirectional reectionless propagation, a hallmark of exceptional point, is unambiguously observed in both simulations and experiments.
Keywords
Cite
@article{arxiv.1803.04110,
title = {Simultaneous Observation of Topological Edge State and Exceptional Point in an Open and Non-Hermitian System},
author = {Weiwei Zhu and Xinsheng Fang and Dongting Li and Yong Sun and Yong Li and Yun Jing and Hong Chen},
journal= {arXiv preprint arXiv:1803.04110},
year = {2018}
}