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Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state.

Takekoshi, Tetsu and Reichsöllner, Lukas and Schindewolf, Andreas and Hutson, Jeremy M. and Le Sueur, C. Ruth and Dulieu, Olivier and Ferlaino, Francesca and Grimm, Rudolf and Nägerl, Hanns-Christoph (2014) 'Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state.', Physical review letters., 113 . p. 205301.

Abstract

We produce ultracold dense trapped samples of Rb87Cs133 molecules in their rovibrational ground state, with full nuclear hyperfine state control, by stimulated Raman adiabatic passage (STIRAP) with efficiencies of 90%. We observe the onset of hyperfine-changing collisions when the magnetic field is ramped so that the molecules are no longer in the hyperfine ground state. A strong quadratic shift of the transition frequencies as a function of applied electric field shows the strongly dipolar character of the RbCs ground-state molecule. Our results open up the prospect of realizing stable bosonic dipolar quantum gases with ultracold molecules.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1103/PhysRevLett.113.205301
Publisher statement:Reprinted with permission from the American Physical Society: Tetsu Takekoshi, Lukas Reichsöllner, Andreas Schindewolf, Jeremy M. Hutson, C. Ruth Le Sueur, Olivier Dulieu, Francesca Ferlaino, Rudolf Grimm, and Hanns-Christoph Nägerl (2014) 'Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state.', Physical review letters., 113 . p. 205301. © 2014 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
Date accepted:23 May 2013
Date deposited:02 December 2014
Date of first online publication:12 November 2014
Date first made open access:02 December 2014

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