Volume 69, Number 5, March 2005
|Page(s)||706 - 712|
|Published online||02 February 2005|
Efficient creation of molecules from a cesium Bose-Einstein condensate
Institut für Experimentalphysik, Universität Innsbruck Technikerstraße 25, 6020 Innsbruck, Austria
2 Institut für Quantenoptik und Quanteninformation Österreichische Akademie der Wissenschaften - 6020 Innsbruck, Austria
Accepted: 12 January 2005
We report a new scheme to create weakly bound molecules from an atomic Bose-Einstein condensate. The method is based on switching the magnetic field to a narrow Feshbach resonance and yields a high atom-molecule conversion efficiency of more than 30%, a factor of three higher than obtained with conventional magnetic-field ramps. The molecules are created in a single g-wave rotational quantum state. The observed dependence of the conversion efficiency on the magnetic field and atom density shows scattering processes beyond two-body coupling to occur in the vicinity of the Feshbach resonance.
PACS: 03.75.-b – Matter waves / 34.50.-s – Scattering of atoms and molecules / 32.80.Pj – Optical cooling of atoms; trapping
© EDP Sciences, 2005
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