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Interacting spin-orbit coupled fermions in a Wannier-Stark optical lattice clock

ORAL

Abstract

We theoretically analyze the interactions between driven spin-orbit coupled fermions in an optical lattice clock based on the partially delocalized Wannier-Stark states in a gravity-tilted shallow lattice. We derive a many-body spin model and consider the following two cases: In carrier transition, we show that the relative strength of the on-site p-wave interactions and off-site s-wave interactions can be easily tuned by lattice intensity, which allows us to precisely cancel the density shift at a "magic" lattice depth; In off-site Wannier-Stark transitions, the s-wave interaction can be significantly enhanced, providing an ideal platform for realizing a ferromagnetic to paramagnetic dynamical phase transition. Our predictions have been demonstrated by recent experimental observations in an optical lattice clock with record clock precision.

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Publication: A. Aeppli, A. Chu, et al. "Hamiltonian engineering of spin-orbit coupled fermions in a Wannier-Stark optical lattice clock." arXiv preprint arXiv:2201.05909 (2022).

Presenters

  • Anjun Chu

    JILA, JILA, NIST and Dept. of Physics, University of Colorado Boulder

Authors

  • Anjun Chu

    JILA, JILA, NIST and Dept. of Physics, University of Colorado Boulder

  • Alexander Aeppli

    JILA, NIST and Dept. of Physics, University of Colorado Boulder

  • Tobias Bothwell

    University of Colorado, Boulder, JILA, NIST and Dept. of Physics, University of Colorado Boulder, JILA, NIST, and University of Colorado Boulder, JILA, NIST and University of Colorado Boulder

  • Colin J Kennedy

    Quantinuum, JILA, NIST and Dept. of Physics, University of Colorado Boulder, JILA, NIST, and University of Colorado Boulder, University of Colorado, Boulder, JILA, NIST and University of Colorado Boulder

  • Dhruv Kedar

    JILA, NIST, and University of Colorado, 440 UCB, Boulder, Colorado 80309, USA, University of Colorado, Boulder, JILA, NIST and Dept. of Physics, University of Colorado Boulder

  • Peiru He

    JILA, JILA, NIST and Dept. of Physics, University of Colorado Boulder

  • Ana Maria Rey

    JILA, JILA, NIST and Dept. of Physics, University of Colorado Boulder, UC Boulder/JILA, JILA, NIST and University of Colorado Boulder, JILA, Department of Physics, University of Colorado, Boulder

  • Jun Ye

    University of Colorado, Boulder, JILA, NIST, and University of Colorado, 440 UCB, Boulder, Colorado 80309, USA, JILA, NIST and Dept. of Physics, University of Colorado Boulder, CU Boulder