Tuesday, February 5, 2013

1302.0496 (Wei Xie et al.)

Supersolid of cold atoms in a bilayer hexagonal optical lattice    [PDF]

Wei Xie, Qi-Hui Chen, Qiong-Hua Wang, Wu-Ming Liu
We propose a scheme to realize the supersolid of cold atoms in a bilayer hexagonal optical lattice. Using the quantum Monte Carlo method, we calculate the ground state phase diagrams which contain an antiferromagnet, a quantum solid, a superfluid, especially, a supersolid. A supersolid phase emerge when the lattice anisotropy or the ratio of intra- to inter-layer tunneling energy increase to a critical value. The supersolid disappear when the anisotropy or the tunneling energy ratio are big enough. We show how the supersolid can be realized by adjusting the optical potentials and the additional zeeman field. We give a experimental protocol to observe those novel phenomenon in the real experiments.
View original: http://arxiv.org/abs/1302.0496

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