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

Progress Towards Precision Measurements in Trapped Polyatomic Molecules

Jul 18, 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


The Standard Model as we know contains insufficient sources of charge parity (CP) violation to explain the observed baryon asymmetry of the universe (BAU). Heavy polar molecules are a sensitive, tabletop platform for precision searches of CP-violating electromagnetic moments originating from Beyond the Standard Model (BSM) physics. The polyatomic molecule YbOH is a promising platform to measure the electron electric dipole moment (eEDM); the electron localized around the Yb nucleus provides the ability to laser cool and trap the molecule, while the vibrational bending mode provides closely spaced parity doublets that allow for systematic error rejection and full alignment of the molecule in modest lab electric fields. Prerequisites for trapping YbOH molecules include developing an efficient molecular slowing scheme, identifying vibrational repump transitions, and spectroscopy on the excited states. Here we report on our progress developing a compact permanent magnet Zeeman-Sisyphus slower. We also report high-resolution frequency modulated (FM) absorption spectroscopy of the (300) stretching vibration in the electronic ground state of YbOH, and progress on excited state spectroscopy.
We acknowledge support from NIST, NSF, the Heising-Simons Foundation, the Gordon and Betty Moore Foundation, and the Alfred P. Sloan Foundation. Y.T. acknowledges support from the Masason Foundation. P.Y. acknowledges support from the Eddleman Fellowship.

Presenter name Ashay Patel
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Primary authors

Mr Ashay Patel (Caltech) Mr Phelan Yu (Caltech) Mr Yi Zeng (Caltech) Arian Jadbabaie (Caltech) Mr Nickolas Pilgram (Caltech) Mr Chandler Conn (Caltech) Mr Yuiki Takahashi (Caltech) Dr Chi Zhang (Caltech) Prof. Timothy Steimle (Arizona State University) Prof. Nicholas Hutzler (Caltech)

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