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Realization of 2D Spin-orbit Interaction and Exotic Topological Orders in Cold Atoms (1304.0291v3)

Published 1 Apr 2013 in cond-mat.str-el and cond-mat.quant-gas

Abstract: Majorana zero bound mode exists in the vortex core of a chiral $p+ip$ superconductor or superfluid, which can be driven from an s-wave pairing state by two-dimensional (2D) spin-orbit (SO) coupling. We propose here a novel scheme based on realistic cold atom platforms to generate 2D SO interactions in a blue-detuned square optical lattice, and predict both the quantum anomalous Hall effect and chiral topological superfluid phase in the experimentally accessible parameter regimes. This work opens a new direction with experimental feasibility to observe non-Abelian topological orders in cold atom systems.

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