Manipulation of coherent atom waves using accelerated two-dimensional optical lattices
Abstract
We study the dynamics of Bose-Einstein condensates in accelerated two-dimensional optical square lattices by numerically solving the Gross-Pitaevskii equation. We consider the regime with negligible mean-field interactions and examine in detail the pulses of atom clouds ejected from the condensate due to Landau-Zener tunnelling. The pulses exhibit patterned structures that can be understood from the momentum-space dynamics of the condensate. Aside from conceiving realization of a pulsed two-dimensional atom laser, we demonstrate that, by exploring the band structure of the lattice, Landau-Zener tunnelling and Bragg reflection of the condensate inside the optical lattice can provide means for manipulation of coherent atom waves.
Cite
@article{arxiv.1005.1138,
title = {Manipulation of coherent atom waves using accelerated two-dimensional optical lattices},
author = {Wei-Chih Ting and Dian-Jiun Han and Shin-Tza Wu},
journal= {arXiv preprint arXiv:1005.1138},
year = {2010}
}
Comments
Figures with low resolution; high quality ones can be supplied on request