P T -Symmetric Topological Edge-Gain Effect

We demonstrate a non-Hermitian topological effect that is characterized by having complex eigenvalues only in the edge states of a topological material, despite the fact that the material is completely uniform. Such an effect can be constructed in any topological structure formed by two gapped subsy...

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Veröffentlicht in:	Physical review letters 2020-07, Vol.125 (3), p.1, Article 033603
Hauptverfasser:	Song, Alex Y., Sun, Xiao-Qi, Dutt, Avik, Minkov, Momchil, Wojcik, Casey, Wang, Haiwen, Williamson, Ian A. D., Orenstein, Meir, Fan, Shanhui
Format:	Artikel
Sprache:	eng
Schlagworte:	Eigenvalues Lasing Photonics Subsystems Topology
Online-Zugang:	Volltext
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