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arXiv · 1507.05256

Scattering-Free Optical Edge States between Heterogeneous Photonic Topological Insulators

Tzuhsuan Ma·Gennady Shvets
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Abstract

We propose a set of three simple photonic platforms capable of emulating quantum topologically insulating phases corresponding to Hall, spin-Hall, and valley-Hall effects. It is shown that an interface between any two of these heterogeneous photonic topological insulators supports scattering-free surface states. Spin and valley degrees of freedom characterizing such topologically protected surface waves determine their unique pathways through complex photonic circuits comprised of multiple heterogeneous interfaces.

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Tzuhsuan Ma, Gennady Shvets. 2015-07-19. Scattering-Free Optical Edge States between Heterogeneous Photonic Topological Insulators. https://doi.org/10.1103/physrevb.95.165102

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