Rapid Adiabatic Passage from an Atomic to a Molecular Condensate

Details Rapid Adiabatic Passage from an Atomic to a Molecular Condensate Rapid Adiabatic Passage from an Atomic to a Molecular Condensate

2002-10-31

arxiv.org/abs/physics/0210131v2

Physics

Atomic Physics

4 pages, 3 figures; submitted to PRL; v2 has fewer references to save space (sorry to those deleted!!), and improved discussio

Scientific paper

We examine collective magnetoassociation of a Bose-Einstein condensate (BEC), focusing on rapid adiabatic passage from atoms to molecules induced by a sweep of the magnetic field across a wide (>~ 10 G) Feshbach resonance in 85Rb. This problem raises an interest because strong magnetoassociation is expected to favor the creation of molecular-dissociated atom pairs over the formation of molecular BEC [Javanainen and Mackie, Phys. Rev. Lett. 88, 090403 (2002)]. Nevertheless, the conversion to atom pairs is found to depend on the direction of the sweep, so that a system initially above threshold (open dissociation channel) may in fact give near-complete conversion to molecules.

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