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Topological valley Hall edge solitons in photonics

A research team recently discovered a novel kind of topological edge soliton that is independent of magnetic field. The valley Hall edge soliton inherits its topological protection from its linear counterpart and does not require any external magnetic field. The result is a light beam that is robust, localized, and maintains its shape during propagation over distance.

source https://www.sciencedaily.com/releases/2021/10/211025171757.htm

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