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All-Dielectric Three-Dimensional Photonic Topological Metacrystals

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Abstract

We demonstrate that a symmetry protected topological (SPT) state can be engineered in a three-dimensional (3D) all-dielectric metacrystal where the electromagnetic duality between electric and magnetic fields is ensured by the meta-atoms design. Magneto-electric coupling results in a complete topological photonic bandgap and an emergence of spin-polarized surface states with conical Dirac dispersion on 2D topological domain walls.

© 2016 Optical Society of America

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