Recent Advances in Atomic Clocks

Presentations

• An Al⁺ Optical Clock at NIST with Improved Frequency Uncertainty

  ORAL · Invited

  June 17, 2025, 2:00 PM – June 17, 2025, 2:30 PM

  Publication: Manuscript in preparation describing the systematic uncertainty and stability evaluation. To be submitted before DAMOP.

  Presenters

  • David B Hume

    • National Institute of Standards and Technology (NIST)
    • National Institute of Standards and Technology Boulder

  Authors

  • Mason C Marshall

    • National Institute of Standards and Technology (NIST)

  • Daniel Rodriguez Castillo

    • University of Colorado, Boulder

  • Willa J Dworschack

    • University of Colorado, Boulder

  • David B Hume

    • National Institute of Standards and Technology (NIST)
    • National Institute of Standards and Technology Boulder

  View abstract →

• Progress towards a Radium-225 ion optical clock

  ORAL

  June 17, 2025, 2:30 PM – June 17, 2025, 2:42 PM

  Presenters

  • Roy A Ready

    • University of California, Santa Barbara

  Authors

  • Roy A Ready

    • University of California, Santa Barbara

  • spencer kofford

    • University of California, Santa Barbara

  • Haoran Li

    • University of California, Santa Barbara

  • Luka Sever-Walter

    • University of California, Santa Barbara

  • Sijia Wang

    • University of California, Santa Barbara

  • Huaxu Dan

    • University of California, Santa Barbara

  • Akshay Sawhney

    • University of California, Santa Barbara
    • University of California Santa Barbara

  • Robert Kwapisz

    • University of California Santa Barbara

  • Charles Berger

    • University of California, Santa Barbara

  • Andrew Jayich

    • University of California, Santa Barbara

  View abstract →

• Development of a solid-state ²²⁹Th nuclear clock

  ORAL

  June 17, 2025, 2:42 PM – June 17, 2025, 2:54 PM

  Publication: 1. Zhang, C. et al. Frequency ratio of the 229mTh nuclear isomeric transition and the 87Sr atomic clock. Nature 633, 63–70 (2024).
  2. Higgins, J. S. et al. Temperature sensitivity of a Thorium-229 solid-state nuclear clock. (accepted, PRL)

  Presenters

  • Tian Ooi

    • University of Colorado, Boulder

  Authors

  • Tian Ooi

    • University of Colorado, Boulder

  • John F Doyle

    • JILA

  • Chuankun Zhang

    • University of Colorado, Boulder

  • Jacob S Higgins

    • JILA

  • Jun Ye

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

  View abstract →

• Atomic Coherence Time and Measurement Precision Limits in a Wannier-Stark Lattice Clock

  ORAL

  June 17, 2025, 2:54 PM – June 17, 2025, 3:06 PM

  Presenters

  • William Warfield

    • JILA

  Authors

  • William Warfield

    • JILA

  • Alexander G Aeppli

    • University of Colorado, Boulder

  • Kyungtae Kim

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

  • Jun Ye

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

  View abstract →

• A fully crystalline ultra-stable optical reference cavity​​

  ORAL

  June 17, 2025, 3:06 PM – June 17, 2025, 3:18 PM

  Publication: [1] Bothwell et al., Nature 602, 420-424 (2022).
  [2] Boulder Atomic Clock Optical Network (BACON) Collaboration*, Nature 591, 564–569 (2021).
  [3] Matei et al., PRL 118, 263202 (2017)
  [4] Kessler et al., Nature Photon 6, 687-692 (2012)
  [5] Kedar et al., Optica 10, 464-470 (2023)
  [6] Milner et al., Phys. Rev. Lett. 12, 173201 (2019)

  Presenters

  • Zoey Hu

    • CU Boulder/JILA

  Authors

  • Zoey Hu

    • CU Boulder/JILA

  • Dahyeon Lee

    • JILA
    • JILA/CU Boulder

  • Ben Lewis

    • JILA
    • JILA/CU Boulder

  • Jun Ye

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

  View abstract →

• Tunable frequency shifts induced by dipole-dipole interactions in a dressed optical clock transition

  ORAL

  June 17, 2025, 3:18 PM – June 17, 2025, 3:30 PM

  Presenters

  • Yong-Ju Hai

    • University of Colorado Boulder
    • JILA, University of Colorado Boulder

  Authors

  • Yong-Ju Hai

    • University of Colorado Boulder
    • JILA, University of Colorado Boulder

  • Sanaa Agarwal

    • JILA
    • JILA, University of Colorado Boulder

  • Ana Maria Rey

    • JILA, University of Colorado, Boulder
    • University of Colorado, Boulder
    • JILA, University of Colorado Boulder
    • JILA, CU Boulder

  View abstract →