Precise Characterization of Few-body Interactions in \textsuperscript{39}K

POSTER

Abstract

Dilute ultracold quantum gases provide an ideal platform to study short-range interactions in a controlled way. Bosonic species present rich physics owing to the two-body and three-body interactions. We will report some of the first results taken with our new \textsuperscript{39}K machine. By doing radio frequency (r.f.) dissociation, we are able to measure the binding energy of Feshbach molecules within an uncertainty of sub-kilohertz. This spectroscopic method not only enables us to locate the pole of the Feshbach resonance with great precision but also assists the detection of small energy shift due to few-body interactions.

Authors

  • Xin Xie

    University of Colorado, Boulder

  • Roman Chapurin

    University of Colorado, Boulder

  • Michael Van de Graaff

    JILA, National Institute of Standards and Technology and University of Colorado, University of Colorado, Boulder

  • Carlos Lopez-Abadia

    JILA, National Institute of Standards and Technology and University of Colorado, University of Colorado, Boulder

  • Jared Popowski

    JILA, National Institute of Standards and Technology and University of Colorado, University of Colorado, Boulder

  • Jun Ye

    JILA, NIST and University of Colorado, and Department of Physics, University of Colorado, JILA, University of Colorado / NIST, JILA, NIST, and University of Colorado, and Department of Physics, University of Colorado, JILA, University of Colorado - Boulder, JILA, NIST, JILA-University of Colorado, JILA Univ of Colorado - Boulder, University of Colorado, Boulder, JILA, University of Colorado Boulder

  • Eric Cornell

    JILA, National Institute of Standards and Technology and University of Colorado, University of Colorado, Boulder