Atom-molecule dark states in a Bose-Einstein condensate

Details Atom-molecule dark states in a Bose-Einstein condensate Atom-molecule dark states in a Bose-Einstein condensate

2005-05-30

arxiv.org/abs/cond-mat/0505732v1

PRL 95, 063202 (2005)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.95.063202

We have created a dark quantum superposition state of a Rb Bose-Einstein condensate (BEC) and a degenerate gas of Rb$_2$ ground state molecules in a specific ro-vibrational state using two-color photoassociation. As a signature for the decoupling of this coherent atom-molecule gas from the light field we observe a striking suppression of photoassociation loss. In our experiment the maximal molecule population in the dark state is limited to about 100 Rb$_2$ molecules due to laser induced decay. The experimental findings can be well described by a simple three mode model.

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