$\mathbb{Z}_2$ topological insulator analog for vortices in an interacting bosonic quantum fluid

Abstract
\mathbb{Z}_2topological insulators for photons and in general bosons cannot be strictly implemented because of the lack of symmetry-protected pseudospins. We show that the required protection can be provided by the real-space topological excitation of an interacting quantum fluid: quantum vortex. We consider a Bose-Einstein Condensate at the \Gammapoint of the Brillouin zone of a quantum valley Hall system based on two staggered honeycomb...
Paper Details
Title
$\mathbb{Z}_2$ topological insulator analog for vortices in an interacting bosonic quantum fluid
Published Date
Sep 6, 2017
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