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Conferences > CLEO_QELS > 2022 > FTu4J > FTu4J.6

Mapping of momentum-space topological singularities in photonic lattices with hybrid pseudospin-1 Dirac-like cones

Sihong Lei, Shiqi Xia, Junqian Wang, Daohong Song, and Zhigang Chen

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Abstract

We experimentally demonstrate higher-order topological charge conversion, exhibiting a vortex pair of identical helicities that can be reversed altogether by selectively mapping different momentum-space topological singularities in photonic T-graphene lattices with integer pseudospin-1 Dirac-like cones.

© 2022 The Author(s)

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