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    Ultracold heteronuclear mixture of ground and excited state atoms

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    Genre
    Journal Article
    Date
    2014-01-23
    Author
    Khramov, A
    Hansen, A
    Dowd, W
    Roy, RJ
    Makrides, C
    Petrov, A
    Kotochigova, S
    Gupta, S
    Subject
    physics.atom-ph
    physics.atom-ph
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/5895
    
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    DOI
    10.1103/PhysRevLett.112.033201
    Abstract
    We report on the realization of an ultracold mixture of lithium atoms in the ground state and ytterbium atoms in an excited metastable (P23) state. Such a mixture can support broad magnetic Feshbach resonances which may be utilized for the production of ultracold molecules with an electronic spin degree of freedom, as well as novel Efimov trimers. We investigate the interaction properties of the mixture in the presence of an external magnetic field and find an upper limit for the background interspecies two-body inelastic decay coefficient of K2′<3×10-12 cm3/s for the P23 mJ=-1 substate. We calculate the dynamic polarizabilities of the Yb(P23) magnetic substates for a range of wavelengths, and find good agreement with our measurements at 1064 nm. Our calculations also allow the identification of magic frequencies where Yb ground and metastable states are identically trapped and the determination of the interspecies van der Waals coefficients. © 2014 American Physical Society.
    Citation to related work
    American Physical Society (APS)
    Has part
    Physical Review Letters
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    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/5877
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