Lattice Light Shift Evaluations In a Dual-Ensemble Yb Optical Lattice Clock

Published

January 22, 2025

Author(s)

Tobias Bothwell, Roger Brown, Benjamin Hunt, Jacob Siegel, Tanner Grogan, Youssef Hassan, Kyle Beloy, Andrew Ludlow, Kurt Gibble, Takumi Kobayashi, Marianna Safronova, Sergey Porsev

Abstract

In state-of-the-art optical lattice clocks, beyond-electric-dipole polarizability terms lead to a break-down of magic wavelength trapping. In this Letter, we report a novel approach to evaluate lattice light shifts, specifically addressing recent discrepancies in the atomic multipolarizability term between experimental techniques and theoretical calculations. We combine imaging and multi-ensemble techniques to evaluate lattice light shift atomic coefficients, leveraging comparisons in a dual-ensemble lattice clock to rapidly evaluate differential frequency shifts. Further, we demonstrate application of a running wave field to probe both the multipolarizability and hyperpolarizability coefficients, establishing a new technique for future lattice light shift evaluations.

Citation

Physical Review Letters

Pub Type

Journals

Download Paper

https://doi.org/10.1103/PhysRevLett.134.033201

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Keywords

Optical lattice clocks, AC Stark, lattice light shifts, synchronous spectroscopy

Citation

Bothwell, T. , Brown, R. , Hunt, B. , Siegel, J. , Grogan, T. , Hassan, Y. , Beloy, K. , Ludlow, A. , Gibble, K. , Kobayashi, T. , Safronova, M. and Porsev, S. (2025), Lattice Light Shift Evaluations In a Dual-Ensemble Yb Optical Lattice Clock, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.134.033201, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=958628 (Accessed October 27, 2025)