Majorana modes and topological superfluids for ultracold fermionic atoms in anisotropic square optical lattices

Ya-Jie Wu (), Ning Li and Su-Peng Kou
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Ya-Jie Wu: School of Science, Xi’an Technological University
Ning Li: School of Science, Xi’an Technological University
Su-Peng Kou: Beijing Normal University

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 12, 1-8

Abstract: Abstract Motivated by the recent experimental realization of two-dimensional spin-orbit coupling through optical Raman lattice scheme, we study attractive interacting ultracold gases with spin-orbit interaction in anisotropic square optical lattices, and find that rich s-wave topological superfluids can be realized, including Z2 topological superfluids beyond the characterization of “tenfold way” in addition to chiral topological superfluids. The topological defects-superfluid vortex and edge dislocations-may host Majorana modes in some topological superfluids, which are helpful for realizing topological quantum computation and Majorana fermionic quantum computation. In addition, we also discuss the Berezinsky-Kosterlitz-Thouless phase transitions for different topological superfluids.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1140/epjb/e2016-70585-4

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