Bulk-edge correspondence and trapping at a non-Hermitian topological interface

Published: Nov 17, 2021
Abstract
In Hermitian systems, according to the bulk-edge correspondence interfacing two topological optical media with different bulk topological numbers implies the existence of edge states, which can trap light at the interface. However, such a general scenario can be violated when dealing with non-Hermitian systems. Here we show that interfacing two semi-infinite Hatano-Nelson chains with different bulk topological numbers can result in the existence...
Paper Details
Title
Bulk-edge correspondence and trapping at a non-Hermitian topological interface
Published Date
Nov 17, 2021
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