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Phys. Rev. Lett. 92, 190401 (2004) [4 pages]

Observation of Reduced Three-Body Recombination in a Correlated 1D Degenerate Bose Gas

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B. Laburthe Tolra *, K. M. O’Hara, J. H. Huckans, W. D. Phillips, S. L. Rolston †, and J. V. Porto
National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

Received 7 November 2003; published 10 May 2004

We investigate the correlation properties of a one-dimensional interacting Bose gas by loading a magnetically trapped 87Rb Bose-Einstein condensate (BEC) into a deep two-dimensional optical lattice. We measure the three-body recombination rate for both the BEC in the magnetic trap and the BEC loaded into the optical lattice. The recombination rate coefficient is a factor of 7 smaller in the lattice, which we interpret as a reduction in the local three-body correlation function in the 1D case. This is a signature of correlation intermediate between that of the uncorrelated, phase coherent, 1D, mean-field regime and the strongly correlated Tonks-Girardeau regime.


URL: http://link.aps.org/doi/10.1103/PhysRevLett.92.190401
DOI: 10.1103/PhysRevLett.92.190401
PACS: 03.75.Lm, 05.30.Jp

* Permanent address: Laboratoire de Physique des Lasers (UMR 7538), Université Paris 13, Paris, France.
† Permanent address: Department of Physics, University of Maryland, College Park, MD 20742, USA.

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