Abstract:Photonic topological structures supporting spin-momentum locked topological states underpin a plethora of prospects and applications for disorder-robust routing of light. One of the cornerstone ideas to realize such states is to exploit uniform bianisotropic response in periodic structures with appropriate lattice symmetries, which together enable the topological bandgaps. Here, it is demonstrated that staggered bianisotropic response gives rise to the topological states even in a simple lattice geometry whose… Show more
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