Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session G03: Atomic Clocks
10:30 AM–12:42 PM,
Wednesday, June 5, 2024
Room: 201A
Chair: Cass Sackett, University of Virginia
Abstract: G03.00008 : Progress toward direct VUV frequency comb spectroscopy of the 229Th nuclear clock transition*
11:54 AM–12:06 PM
Presenter:
Chuankun Zhang
(University of Colorado, Boulder)
Authors:
Chuankun Zhang
(University of Colorado, Boulder)
Jacob S Higgins
(JILA, NIST and the University of Colorado, Boulder)
Tian Ooi
(University of Colorado Boulder)
John F Doyle
(University of Colorado, Boulder)
Lars von der Wense
(University of Colorado, Boulder. Now at Johannes Gutenberg-Universität Mainz)
Jun Ye
(CU Boulder)
However, direct laser excitation of this transition has yet to be achieved. Based on recent nuclear physics experiments that significantly reduced the transition energy uncertainty, we are currently searching for this transition using a VUV optical frequency comb. We will present our recent attempt on optical excitation of the nuclear transition in a thin-film solid-state environment, aiming for building a nuclear-based clock. We will also discuss our efforts developing alternative spectroscopy target systems for the nuclear transition search.
*This work is supported by ARO Grant No. W911NF2010182, AFOSR Grant No. FA9550-19-1-0148, NSF Grant No. PHY-1734006 and National Institute of Standards and Technology.
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