Observation of higher-order exceptional points in a non-local acoustic metagrating

Exceptional points are singularities in the parameter space of a physical system where two or more eigenvalues, and their associated eigenvectors, simultaneously coalesce. Here, it is shown that non-local acoustic metagratings that enable precise control over their multiple orders of diffraction, ca...

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Bibliographic Details
Main Authors: Xinsheng Fang, Nikhil J R K Gerard, Zhiling Zhou, Hua Ding, Nengyin Wang, Bin Jia, Yuanchen Deng, Xu Wang, Yun Jing, Yong Li
Format: Article
Language:English
Published: Nature Portfolio 2021-12-01
Series:Communications Physics
Online Access:https://doi.org/10.1038/s42005-021-00779-x