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arXiv · 1209.5463

Topological superfluid in a fermionic bilayer optical lattice

Ya-Jie Wu·Jing He·Chun-Li Zang·Su-Peng Kou
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Abstract

In this paper, a topological superfluid phase with Chern number C=1 possessing gapless edge states and non-Abelian anyons is designed in a C=1 topological insulator proximity to an s-wave superfluid on an optical lattice with the effective gauge field and layer-dependent Zeeman field coupled to ultracold fermionic atoms pseudo spin. We also study its topological properties and calculate the phase stiffness by using the random-phase-approximation approach. Finally we derive the temperature of the Kosterlitz-Thouless transition by means of renormalized group theory. Owning to the existence of non-Abelian anyons, this C=1 topological superfluid may be a possible candidate for topological quantum computation.

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Ya-Jie Wu, Jing He, Chun-Li Zang, Su-Peng Kou. 2012-09-25. Topological superfluid in a fermionic bilayer optical lattice. https://doi.org/10.1140/epjb/e2013-31045-1

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