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Frequency Metrology with Ultracold Molecules

December 5, 2022 - 11:00am
Speaker: 
Tanya Zelevinsky
Institution: 
Columbia University

Abstract: Ultracold atom technologies have transformed our ability to perform high-precision spectroscopy and apply it to time and frequency metrology.  Many of the highest-performing atomic clocks are based on laser-cooled atoms trapped in optical lattices.  These clocks can be applied to fundamental questions, for example to improve our understanding of gravity and general relativity.  In this talk, I will discuss using lattice-trapped ultracold diatomic molecules, rather than atoms, as a reference for clocks.  Molecules have more internal quantum states and therefore are relatively challenging to control.  On the other hand, they offer a large number of prospective clock transitions, and can help us probe alternative aspects of new physical interactions.  I will discuss the current precision limit of molecular metrology, and possible paths forward.

Location: ATL 2400

JQI Seminars are held on Mondays during Fall and Spring semesters at 11:00 a.m. Eastern Time in Room 2400 of the Atlantic Building. University of Maryland affiliates may participate using Zoom. The seminars are also livestreamed on the JQI YouTube channel (https://www.youtube.com/user/JQInews), which supports audience participation in the chat interface.