Towards a low entropy gas of fermionic polar molecules

POSTER

Abstract

In recent years, ultracold gases of polar molecules have garnered much attention, owing in part to their prospects for emulating condensed matter systems with long-range interactions. To enable the observation of long-range dipolar interactions, which has so far been precluded by insufficient molecular densities, we aim to create a high-filling-fraction sample of ground state polar KRb molecules in a three-dimensional optical lattice. This can be accomplished by disposing an initial Bose--Fermi lattice mixture towards the formation of preformed pairs - one boson and one fermion per lattice site - via control over the interspecies interactions, followed by efficient conversion to deeply bound ground state molecules. To characterize the entropy in our system, we shall study two-body losses due to reactive collisions occurring in molecular rotational-state mixtures.

Authors

  • Bryce Gadway

    • JILA, NIST, and University of Colorado-Boulder

  • Steven Moses

    • JILA, NIST, and University of Colorado-Boulder

  • Bo Yan

    • JILA, NIST, and University of Colorado-Boulder

  • Jacob Covey

    • JILA, NIST, and University of Colorado-Boulder

  • Deborah Jin

    • JILA, NIST and the University of Colorado
    • JILA, NIST, and University of Colorado-Boulder

  • Jun Ye

    • JILA, NIST, University of Colorado, Boulder
    • JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, Boulder, CO 80309, USA
    • JILA/University of Colorado at Boulder
    • JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, CO
    • JILA, University of CO, Boulder and NIST
    • JILA, NIST and University of Colorado-Boulder, and Department of Physics, University of Colorado-Boulder
    • JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics
    • JILA, NIST, and University of Colorado-Boulder