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physics.optics2022★ 1 cited
Higher-order topological states in photonic Thue-Morse quasicrystals: quadrupole insulator and a new origin of corner states
Langlang Xiong, Yu Zhang, Yufu Liu +2
Corner states (CSs) in higher-order topological insulators (HOTIs) have recently been of great interest in both crystals and quasicrystals. In contrast to electronic systems, HOTIs…
physics.optics2022★ 18 cited
Topological properties of two-dimensional photonic square lattice without and symmetries
Langlang Xiong, Yufu Liu, Yu Zhang +2
Rich topological phenomena, edge states and two types of corner states, are unveiled in a two-dimensional square-lattice dielectric photonic crystal without both and $M_{x(y)…