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.

*NSF, PFC, NASA, NIST

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