Universal Conversion Of Topological Singularities From Momentum To Real Space

Xiuying Liu,Shiqi Xia,Ema Jajtic,Daohong Song,Denghui Li,Liqin Tang,Daniel Leykam,Jingjun Xu,Hrvoje Buljan,Zhigang Chen

2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)（2020）

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摘要

We demonstrate universal conversion of topological singularities in momentum-space (Dirac points) to topological defects in real-space (optical vortices). We show that this conversion persists even in stretched lattices, topologically protected by a quantized Berry phase. (C) 2020 The Author(s)

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关键词

optical vortices,conversion persists,universal conversion,topological singularities,momentum-space,Dirac points,topological defects

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