1203.3848 (Guocai Liu et al.)

Topological Superfluid Transition Induced by Periodically Driven Optical
Lattice    [PDF]

Guocai Liu, Ningning Hao, Shi-Liang Zhu, W. M. Liu

We propose a scenario to create topological superfluid in a periodically driven two-dimensional square optical lattice. We study the phase diagram of a spin-orbit coupled s-wave pairing superfluid in a periodically driven two-dimensional square optical lattice. We find that a phase transition from a trivial superfluid to a topological superfluid occurs when the potentials of the optical lattices are periodically changed. The topological phase is called Floquet topological superfluid and can host Majorana fermions.

View original: http://arxiv.org/abs/1203.3848