Topological superfluid in a fermionic bilayer optical lattice
Department of Physics, Beijing Normal
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Published online: 20 March 2013
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.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013