Abstract
We reveal the existence of high-density Feshbach resonances in the collision between the ground and metastable states of 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 ultranarrow photoassociation will be a basis for practical implementation of optical Feshbach resonances.
- Received 4 September 2015
DOI:https://doi.org/10.1103/PhysRevLett.116.043202
© 2016 American Physical Society