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Theory of non-Hermitian topological whispering gallery

Physics

Theory of non-Hermitian topological whispering gallery

R. Pernas-salomón, L. Zheng, et al.

Explore the fascinating relationship between geometry and acoustic gain in a groundbreaking topological whispering gallery study led by René Pernas-Salomón, Li-Yang Zheng, Zhiwang Zhang, Penglin Gao, Xiaojun Liu, Ying Cheng, and Johan Christensen. This research delves into complex states and mode-split resonances, paving the way for future advancements in thermoacoustic properties.

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Playback language: English
Abstract
This paper presents a theoretical and numerical study of the interplay between geometry and acoustic gain in a topological whispering gallery configuration. The authors predict complex bulk and edge states, compute mode-split resonances, and observe acoustic amplitude saturation depending on the number of activated coated elements. The computational advancements could assist future explorations of thermoacoustic topological properties.
Publisher
npj Computational Materials
Published On
Nov 18, 2022
Authors
René Pernas-Salomón, Li-Yang Zheng, Zhiwang Zhang, Penglin Gao, Xiaojun Liu, Ying Cheng, Johan Christensen
Tags
geometry
acoustic gain
topological whispering gallery
bulk states
edge states
mode-split resonances
thermoacoustic properties

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