Coherent Population Trapping in a Feshbach-Resonant Cesium Condensate
Mackie, Matt
Original · EN
Recent experiments with Feshbach-resonant cesium Bose-Einstein condensates have led to unexplained molecule formation: a sudden switch of the magnetic field to its resonance value, followed by a finite hold time and another sudden switch to magnetic field values below threshold, converts about a third of the initial condensate atoms into molecules. Based on a model of coherent conversion between an atomic condensate, a molecular condensate, and magnetodissociated noncondensate atom pairs of equal and opposite momentum, we find that population trapping is strongly implicated as the physical mechanism responsible for molecule formation in switch experiments.
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