Bose-Einstein condensates near a microfabricated surface

Details Bose-Einstein condensates near a microfabricated surface Bose-Einstein condensates near a microfabricated surface

2002-11-16

arxiv.org/abs/cond-mat/0211345v1

Phys. Rev. Lett. 90, 100404 (2003)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.100404

Magnetically and optically confined Bose-Einstein condensates were studied near a microfabricated surface. Condensate fragmentation observed in microfabricated magnetic traps was not observed in optical dipole traps at the same location. The measured condensate lifetime was $\geq 20$ s and independent of the atom-surface separation under both magnetic and optical confinement. Radio-frequency spin-flip transitions driven by technical noise were directly observed for optically confined condensates and could limit the condensate lifetime in microfabricated magnetic traps.

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