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Feshbach-Resonance-Enhanced Coherent Atom-Molecule Conversion with Ultra-Narrow Photoassociation Resonance

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arxiv 1509.01830 v1 pith:IJ6OFKQL submitted 2015-09-06 physics.atom-ph cond-mat.quant-gas

Shintaro Taie , Shunsuke Watanabe , Tomohiro Ichinose , Yoshiro Takahashi This is my paper
classification physics.atom-phcond-mat.quant-gas
keywords feshbachphotoassociationresonancesmoleculeopticalultra-narrowallowingassociated
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abstract

We reveal the existence of high-density Feshbach resonances in the collision between the ground and metastable states of $^{171}$Yb and coherently produce the associated Feshbach molecules by photoassociation. The extremely small transition rate is overcome by the enhanced Franck-Condon factor of the weakly bound Feshbach molecule, allowing us to observe Rabi oscillations with long decay time between an atom pair and a molecule in an optical lattice. We also perform the precision measurement of the binding energies, which characterizes the observed resonances. The ultra-narrow photoassociation will be a basis for practical implementation of optical Feshbach resonances.

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