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cond-mat.mes-hall2022★ 11 cited
Intrinsic triple degeneracy point bounded by nodal surfaces in chiral photonic crystal
Dongyang Wang, Hongwei Jia, Quanlong Yang +3
In periodic systems, band degeneracies are usually protected and classified by spatial symmetries. However, the Gamma point at zero-frequency of a photonic system is an intrinsic d…
physics.optics2022★ 12 cited
Demonstration of non-Abelian frame charge flow in photonic crystals
Dongyang Wang, Z. Q. Zhang, C. T. Chan
In PT symmetric systems, the notion of non-Abelian frame charges enables multiband topological characterization of the degeneracy nodes through examining the eigenvector frame rota…