Michael Tarbutt "Testing fundamental physics using laser cooled molecules"

Invited talk by Michael Tarbutt (Imperial College London, United Kingdom):
"Testing fundamental physics using laser cooled molecules"

This talk was a part of Workshop on Ultracold Molecules 2023, that took place in Warsaw, Poland on 05-08.09.2023.
For more details please refer to workshop website: https://ultracold-molecules-2023.fuw....
For information on future events visit our website: https://camop.uw.edu.pl

Abstract:
I will present progress on two experiments that use laser-cooled molecules to test fundamental physics. In the first, we are developing a clock based on vibrational transitions in CaF molecules confined in a magic wavelength lattice. Pure vibrational transitions have little sensitivity to external perturbations so can make highly accurate clocks. By comparing to an optical atomic clock, we aim to measure variations in the electron-to-proton mass ratio. The molecular lattice clock could also provide improved frequency standards in the infra-red. In the second experiment, we aim to measure the electron’s electric dipole moment using ultracold YbF molecules. I will present the construction of this experiment which features a slow-moving beam cooled below 100 µK in an extremely low magnetic noise environment.