Zero-energy Corner States in a Non-Hermitian Quadrupole Insulator

Yang Yu; Gennady Shvets

doi:10.1364/CLEO_AT.2020.JW2D.2

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2020),
paper JW2D.2
•https://doi.org/10.1364/CLEO_AT.2020.JW2D.2

Zero-energy Corner States in a Non-Hermitian Quadrupole Insulator

Yang Yu and Gennady Shvets

CLEO: Science and Innovations 2020

Washington, DC United States
10–15 May 2020
ISBN: 978-1-943580-76-7

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Joint Poster Session 9 (JW2D)

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Y. Yu and G. Shvets, "Zero-energy Corner States in a Non-Hermitian Quadrupole Insulator," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2020), paper JW2D.2.

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Abstract

We find a zero-energy corner state in a non-Hermitian quadrupole insulator without an Hermitian counterpart, and the response of the system near zero energy can be drastically different from Hermitian systems.

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