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Bulletin of the American Physical Society

Nonequilibrium response of a molecular Bose-Einstein condensate near a Feshbach resonance.

Masudul Haque, Henk T. C. Stoof

Published Mar 22, 2005• 0 citations
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Atom–molecule coherence in a Bose-Einstein condensate (BEC) has been demonstrated. Sudden changes were made to the magnetic field near a Feshbach resonance such that oscillations between atomic and molecular states were excited. The frequency of these oscillations was measured over a large range of magnetic fields and was found to be in excellent quantitative agreement with the predicted energy difference between two colliding atoms and the bound molecular state. This agreement indicates that we have created a quantum superposition of atoms and diatomic molecules, which are chemically different species. 1