Simultaneous Observation of a Topological Edge State and Exceptional Point in an Open and Non-Hermitian Acoustic System

• Published in: Physical review letters Vol. 121; no. 12; p. 124501
• Main Authors: Zhu, Weiwei, Fang, Xinsheng, Li, Dongting, Sun, Yong, Li, Yong, Jing, Yun, Chen, Hong
• Format: Journal Article
• Language: English
• Published: United States 21.09.2018

This Letter reports on the experimental observation of a topologically protected edge state and exceptional point in an open and non-Hermitian (lossy) acoustic system. Although the theoretical underpinning is generic to wave physics, the simulations and experiments are performed for an acoustic syst...