Bose-Einstein condensates on a permanent magnetic film atom chip

Details Bose-Einstein condensates on a permanent magnetic film atom chip Bose-Einstein condensates on a permanent magnetic film atom chip

2005-09-05

arxiv.org/abs/cond-mat/0509091v1

Physics

Condensed Matter

Other Condensed Matter

8 pages, 5 figures, to appear in ICOLS05 proceedings

Scientific paper

We present a permanent magnetic film atom chip based on perpendicularly magnetized TbGdFeCo films. This chip routinely produces a Bose-Einstein condensate (BEC) of 10^5 87Rb atoms using the magnetic film potential. Fragmentation observed near the film surface provides unique opportunities to study BEC in a disordered potential. We show this potential can be used to simultaneously produce multiple spatially separated condensates. We exploit part of this potential to realize a time-dependent double well system for splitting a condensate.

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