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PT-symmetric topological edge-gain effect

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Abstract

A uniform non-Hermitian material can exhibit a state where non-Hermicity, i.e. gain and loss, only manifests on the edge but not in the bulk. This effect is protected by the bulk topology and parity-time symmetry.

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More Like This
Topological Insulators in PT-Symmetric Lattices

Gal Harari, Yonatan Plotnik, Miguel A. Bandres, Yaakov Lumer, Mikael Rechtsman, and Mordechai Segev
FTh3D.3 CLEO: QELS_Fundamental Science (CLEO_QELS) 2015

Photonic Parity-Time Symmetric Topological Edge States in a Two-Dimensional Lattice

Jiho Noh, Wladimir A. Benalcazar, Taylor L. Hughes, and Mikael C. Rechtsman
FM2Q.2 CLEO: QELS_Fundamental Science (CLEO_QELS) 2018

Floqeut Topological Phases in PT Symmetric Quantum Walks with Gain and Loss

Hideaki Obuse, Ken Mochizuki, Dakyeong Kim, and Norio Kawakami
JSIV_P_5 European Quantum Electronics Conference (EQEC) 2017

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