Antiferromagnetic spinor condensates in a two-dimensional optical lattice
Quantum Gases
2015-06-08 v1
Abstract
We experimentally demonstrate that spin dynamics and the phase diagram of spinor condensates can be conveniently tuned by a two-dimensional optical lattice. Spin population oscillations and a lattice-tuned separatrix in phase space are observed in every lattice where a substantial superfluid fraction exists. In a sufficiently deep lattice, we observe a phase transition from a longitudinal polar phase to a broken-axisymmetry phase in steady states of lattice-confined spinor condensates. The steady states are found to depend sigmoidally on the lattice depth and exponentially on the magnetic field. We also introduce a phenomenological model that semi-quantitatively describes our data without adjustable parameters.
Cite
@article{arxiv.1412.8702,
title = {Antiferromagnetic spinor condensates in a two-dimensional optical lattice},
author = {L. Zhao and J. Jiang and T. Tang and M. Webb and Y. Liu},
journal= {arXiv preprint arXiv:1412.8702},
year = {2015}
}