Modeling lattice light shifts in optical lattice clocks

ORAL

Abstract

Optical lattice clocks rely on a strong perturbation to the atoms for atomic confinement. Within the optical lattice, the atomic levels are light-shifted by an amount $\gtrsim\!10^{-10}$ times the clock frequency. While clock performance has steadily improved over the years, with fractional inaccuracies at the low-$10^{-18}$ level now being realized, lattice light shifts have invariably been a dominant item in the uncertainty budgets. To realize new levels of clock performance, better theoretical models will be required for characterizing the lattice light shifts. Here we present a new model developed for this purpose.

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Authors

  • Kyle Beloy

    • National Institute of Standards and Technology Boulder

  • William McGrew

    • National Institute of Standards and Technology Boulder & Department of Physics, University of Colorado, Boulder

  • Xiaogang Zhang

    • National Institute of Standards and Technology Boulder

  • Daniele Nicolodi

    • National Institute of Standards and Technology Boulder

  • Robert Fasano

    • National Institute of Standards and Technology Boulder & Department of Physics, University of Colorado, Boulder

  • Youssef Hassan

    • National Institute of Standards and Technology Boulder & Department of Physics, University of Colorado, Boulder

  • Roger Brown

    • National Institute of Standards and Technology Boulder

  • Andrew Ludlow

    • National Institute of Standards and Technology Boulder & Department of Physics, University of Colorado, Boulder
    • NIST