Controlling two-species Mott-insulator phses in an optical lattice to form an array of dipolar molecules
Abstract
We consider the transfer of a two-species Bose-Einstein condensate into an optical lattice with a density such that that a Mott-insulator state with one atom per species per lattice site is obtained in the deep lattice regime. Depending on collision parameters the result could be either a `mixed' or a `separated' Mott-insulator phase. Such a `mixed' two-species insulator could then be photo-associated into an array of dipolar molecules suitable for quantum computation or the formation of a dipolar molecular condensate. For the case of a Rb-K two-species BEC, however, the large inter-species scattering length makes obtaining the desired `mixed' Mott insulator phase difficult. To overcome this difficulty we investigate the effect of varying the lattice frequency on the mean-field interaction and find a favorable parameter regime under which a lattice of dipolar molecules could be generated.
Keywords
Cite
@article{arxiv.cond-mat/0209621,
title = {Controlling two-species Mott-insulator phses in an optical lattice to form an array of dipolar molecules},
author = {M. G. Moore and H. R. Sadeghpour},
journal= {arXiv preprint arXiv:cond-mat/0209621},
year = {2009}
}