Engineered entanglement in a tweezer-loaded Hubbard-regime optical lattice

POSTER

Abstract

Arrays of neutral-atoms loaded into optical tweezers with single-particle control have provided a versatile platform for quantum simulation, quantum information, and optical frequency metrology. Building on previous work with tweezer-trapped arrays of ground-state cooled strontium atoms and half-minute atomic coherence times [1], we present results on interfacing our tweezer array with a 3D optical lattice. This hybrid design provides an optical-power efficient method for generating potentials deep enough for low-loss imaging, and high fidelity rotations on strontium’s clock transition. It also opens the door to quantum simulations of Hubbard-model physics, and as a first demonstration of tunneling dynamics on this platform we use the tweezer array to load a single plane of the 3D lattice; we then ramp down the lattice confinement in the plane of the tweezers, and observe quantum random walks of single atoms in two dimensions, as well as 2D Bloch oscillations. Additionally, we present results that introduce long-range, Van-der-Waals type interactions between Rydberg-dressed atoms. Leveraging the flexibility of tweezer-array geometries, we create arrays of atom pairs and use this Rydberg-interaction to perform two-qubit gates on the optical-clock transition. These advances should enable future studies of spin squeezing for quantum enhanced metrology, investigations into the nature of long-lived entanglement on an optical-clock qubit, as well as simulation of extended Hubbard models and transverse-field ising models. 

*This work was supported by the NIST, ARO, AFOSR, and the NSF.

Publication: [1] Young A.W. et al. Nature 588, 408–413 (2020).

Presenters

  • William J Eckner

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

Authors

  • William J Eckner

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

  • Aaron W Young

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

  • Nathan A Schine

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

  • William R Milner

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

  • Dhruv Kedar

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

  • Eric Oelker

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

  • Jun Ye

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

  • Adam Kaufman

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