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Little chip; big BEC.

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First observation: BEC!

Group: Thywissen

Authors and contributors: S. Aubin, M. Extavour, S. Myrskog, L. LeBlanc, J. Esteve, S. Singh, P. Scrutton, D. McKay, R. McKenzie, I. Leroux, A. Stummer, and J. H. Thywissen

On April 27, 2005, we observed a Bose-Einstein condensate (BEC) in our lab. While not the first BEC in the world -- in fact there's already a BEC down the hall from us -- it has demonstrated the effectiveness of our hybrid approach to microfabricated traps. We have seen pure condensates with as many as 2×105 atoms, unusually high for clouds evaporatively cooled in chip traps. The condensate is trapped and evaporated on a chip that measures only 16×28mm, but since we form our MOT using a 6-beam configuration (instead of a mirror MOT), we can capture 109 Rb atoms in the MOT and fill the magnetic chip trap up to its trap-depth-limited capcity (about 3×107).

For more information, see our web page announcement.

Posted: 24 Sep 2010     Date: 27 Apr 2005

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