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Logo: Institut für Quantenoptik/Leibniz Universität Hannover
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Logo: Institut für Quantenoptik/Leibniz Universität Hannover
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Radio-frequency association of heteronuclear Feshbach molecules

We have analysed the production efficiency of weakly bound heteronuclear 40K87Rb Feshbach molecules using radio-frequency association in a harmonic trap. The efficiency was measured in a wide range of temperatures, binding energies, and radio frequencies. A comprehensive analytical model is presented, explaining the observed asymmetric spectra and achieving good quantitative agreement with the measured production rates. This model provides a deep understanding of the molecule association process and paves the way for future experiments which rely on Feshbach molecules, e.g., for the production of deeply bound molecules.

 

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