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arXiv · 0810.1965

Coherent Atom-Molecule Oscillations in a Bose-Fermi Mixture

M. L. Olsen·J. D. Perreault·T. D. Cumby·D. S. Jin
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Abstract

We create atom-molecule superpositions in a Bose-Fermi mixture of Rb-87 and K-40 atoms. The superpositions are generated by ramping an applied magnetic field near an interspecies Fano-Feshbach resonance to coherently couple atom and molecule states. Rabi- and Ramsey-type experiments show oscillations in the molecule population that persist as long as 150 microseconds and have up to 50% contrast. The frequencies of these oscillations are magnetic-field dependent and consistent with the predicted molecule binding energy. This quantum superposition involves a molecule and a pair of free particles with different statistics (i.e. bosons and fermions), and furthers exploration of atom-molecule coherence in systems without a Bose-Einstein condensate.

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M. L. Olsen, J. D. Perreault, T. D. Cumby, D. S. Jin. 2008-10-10. Coherent Atom-Molecule Oscillations in a Bose-Fermi Mixture. https://doi.org/10.1103/physreva.80.030701

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