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

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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)

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.

Suggested Citation

  • Ya-Jie Wu & Ning Li & Su-Peng Kou, 2016. "Majorana modes and topological superfluids for ultracold fermionic atoms in anisotropic square optical lattices," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(12), pages 1-8, December.
    • Handle: RePEc:spr:eurphb:v:89:y:2016:i:12:d:10.1140_epjb_e2016-70585-4
    DOI: 10.1140/epjb/e2016-70585-4
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    Solid State and Materials;

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