Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Prospects for Constraints on Nanometer-Range Non-Newtonian Gravity with a State-of-the-art Molecular Clock

Jul 20, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Precision measurement and tests of fundamental physics Poster session

Description

Ultracold molecules are a powerful platform for metrology, precision measurements and searches for new, beyond-the-Standard-Model physics. In particular, Sr$_2$, thanks to its simple structure, insensitivity to external fields and narrow optical transitions, provides an excellent testbed for the search for new interactions. Here, we present a detailed characterisation of our $^{88}$Sr$_2$ molecular clock for a vibrational transition spanning the entire depth of the ground state potential. We control systematic shifts at the $10^{-14}$ level and perform absolute frequency measurements at the $10^{-13}$ level, limited by GPS-based time transfer infrastructure. We discuss prospects to use strontium isotopologues to place improved constraints on new mass-dependent forces, including possible pathways toward the production of ultracold $^{86}$Sr$_2$ and $^{84}$Sr$_2$ dimers and spectroscopy of clock lines in these species.

Presenter name Emily Tiberi
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Primary authors

Kon H. Leung (Columbia University) Brandon Iritani (Columbia University) Emily Tiberi (Columbia University) Dr Mateusz Borkowski (Columbia University and University of Amsterdam) Prof. Tanya Zelevinsky (Columbia University)

Presentation materials

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