Bulletin of the American Physical Society
APS March Meeting 2023
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session K69: Landauer-Bennett Award Prize Symposium
3:00 PM–6:00 PM,
Tuesday, March 7, 2023
Room: Room 421
Sponsoring Unit: DQI
Chair: Andrew Cleland, University of Chicago
Abstract: K69.00005 : Testing relativity in the laboratory with optical lattice atomic clocks*
5:24 PM–6:00 PM
In this talk I will explain the motivation, concept, and operating principles of our multiplexed optical lattice clock. I will then present recent experimental results in which?we performed a novel, blinded, precision test of the gravitational redshift with an array of 5 evenly-spaced atomic ensembles spanning a total?height difference of 1?cm. I will present the error budget produced from our systematic evaluation, and the recently unblinded results of our first test. I will also discuss how these results can also be viewed as a proof-of-principle demonstration of relativistic geodesy at the sub-cm scale. Finally, I will discuss the outlook for future searches for new physics with our apparatus, including a novel direct test of the Einstein Equivalence Principle, and explorations of the interplay between general relativity and quantum mechanics.?
*This work was supported by the NIST Precision Measurement Grants program, the Northwestern University Center for Fundamental Physics and the John Templeton Foundation through a Fundamental Physics grant, the Wisconsin Alumni Research Foundation, a Packard Fellowship for Science and Engineering, the Army Research Office through agreement number W911NF-21-1-0012, and the National Science Foundation under Grant No. 2143870.
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