title: Doublon dynamics and polar molecule production in an optical lattice.
abstract: Polar molecules in an optical lattice provide a versatile platform to study quantum many-body dynamics. Here we use such a system to prepare a density distribution where lattice sites are either empty or occupied by a doublon composed of an interacting Bose-Fermi pair. By letting this out-of-equilibrium system evolve from a well-defined, but disordered, initial condition, we observe clear effects on pairing that arise from inter-species interactions, a higher partial-wave Feshbach resonance and excited Bloch-band population. These observations facilitate a detailed understanding of molecule formation in the lattice. Moreover, the interplay of tunnelling and interaction of fermions and bosons provides a controllable platform to study Bose-Fermi Hubbard dynamics. Additionally, we can probe the distribution of the atomic gases in the lattice by measuring the inelastic loss of doublons. These techniques realize tools that are generically applicable to studying the complex dynamics of atomic mixtures in optical lattices.
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Jacob P
authors.initials: JP
authors.lastname: Covey
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Steven A
authors.initials: SA
authors.lastname: Moses
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Martin
authors.initials: M
authors.lastname: Gärttner
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Arghavan
authors.initials: A
authors.lastname: Safavi-Naini
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Matthew T
authors.initials: MT
authors.lastname: Miecnikowski
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Zhengkun
authors.initials: Z
authors.lastname: Fu
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Johannes
authors.initials: J
authors.lastname: Schachenmayer
authors.affiliation: Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20702, USA.
authors.forename: Paul S
authors.initials: PS
authors.lastname: Julienne
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Ana Maria
authors.initials: AM
authors.lastname: Rey
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Deborah S
authors.initials: DS
authors.lastname: Jin
authors.affiliation: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: Jun
authors.initials: J
authors.lastname: Ye