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physics.optics2026
Fractional optical skyrmions
Yuancong Cao, Ram Nandan Kumar, Hadrian Bezuidenhout +3
Optical topologies in the form of Skyrmions have attracted significant interest of late, where their integer Skyrmion number has been shown to be robust to complex media. Here we c…
cond-mat.mes-hall2026★ 1 cited
Forbidden second harmonics in centrosymmetric bilayer crystals
Haoning Tang, Zhitong Ding, Tianyi Ruan +7
Optical spectroscopy based on second-order nonlinearity is a critical technique for characterizing two-dimensional (2D) crystals as well as bioimaging and quantum optics. It is gen…