Interaction induced trapping and pulsed emission of a magnetically insensitive Bose-Einstein Condensate

Details Interaction induced trapping and pulsed emission of a magnetically insensitive Bose-Einstein Condensate Interaction induced trapping and pulsed emission of a magnetically insensitive Bose-Einstein Condensate

2008-03-14

arxiv.org/abs/0803.2156v3

EPL, 84 (2008) 40011

Physics

Condensed Matter

Other Condensed Matter

5 pages, 4 figures

Scientific paper

10.1209/0295-5075/84/40011

We demonstrate that atoms in magnetically insensitive hyperfine states (m=0) can be trapped efficiently by a Bose-Einstein Condensate of the same atomic species occupying a different hyperfine state. The latter is trapped magnetically. Hyperfine state changing collisions, and therefore loss of the trapped (m=0) atoms, are shown to be strongly inhibited in case of a low density of the confined atomic cloud. We monitor the transition from a 'soft' to a 'hard' effective potential by studying the backaction of the trapped (m=0) atoms onto the condensate which provides their confinement. The controlled outcoupling of the trapped atoms by shaping the condensate's wavefunction is explored. We observe a pulsed emission of atoms from the trapping region reminiscent of an atom laser.

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