Two-dimensional Bose-Einstein condensate in an optical surface trap
Soft Condensed Matter
2007-05-23 v1
Abstract
We report on the creation of a two-dimensional Bose-Einstein condensate of cesium atoms in a gravito-optical surface trap. The condensate is produced a few micrometer above a dielectric surface on an evanescent-wave atom mirror. After evaporative cooling by all-optical means, expansion measurements for the tightly confined vertical motion show energies well below the vibrational energy quantum. The presence of a condensate is observed in two independent ways by a magnetically induced collapse at negative scattering length and by measurements of the horizontal expansion.
Cite
@article{arxiv.cond-mat/0309536,
title = {Two-dimensional Bose-Einstein condensate in an optical surface trap},
author = {D. Rychtarik and B. Engeser and H. -C. Nägerl and R. Grimm},
journal= {arXiv preprint arXiv:cond-mat/0309536},
year = {2007}
}