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physics.optics2019
Finite-dimensional bistable topological insulators: From small to large
Weifeng Zhang, Xianfeng Chen, Yaroslav V. Kartashov +2
Photonic topological insulators supporting unidirectional topologically protected edge states represent attractive platform for realization of disorder- and backscattering-immune t…
physics.optics2018
Bloch oscillations in arrays of helical waveguides
WeiFeng Zhang, Xiao Zhang, Yaroslav V. Kartashov +2
We study optical Bloch oscillations in the one- and two-dimensional arrays of helical waveguides with transverse refractive index gradient. Longitudinal rotation of waveguides may…