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Physics Colloquium

Thursday, February 24, 2022
4:00pm to 5:00pm
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Online and In-Person Event
Cold and ultra-cold molecules for quantum science
John Doyle, Harvard University,

Polar molecules, due to their intrinsic electric dipole moment and their controllable complexity, are a powerful platform for precision measurement searches for physics beyond the standard model (BSM) and, potentially, for quantum simulation/computation. This has led to many experimental efforts to cool and control molecules at the quantum level. I will discuss our results on the laser cooling of molecules into the ultracold regime and future prospects for molecules in Quantum Science. In particular, I will discuss the creation of an optical tweezer array of ultracold CaF molecules, the study of ultracold CaF collisions, and the laser cooling of the polyatomic molecules SrOH, YbOH, CaOH and CaOCH3. Polyatomic molecules, perhaps much larger than those just listed, have attracted new focus as potential novel quantum resources that have distinct advantages (and challenges) compared to both atoms and diatomic molecules. I will discuss how some key features of polyatomic molecules can be used to enhance applications in quantum simulation/computation, the search for BSM physics. Finally, if time permits, I will discuss recent measurements indicating that it might be possible to laser cool much larger molecules, including phenols and napthols.

Limited attendance in Feynman Lecture Hall, 201 E. Bridge to first 100 people. All attendees must show valid Caltech ID upon entry. Join via Zoom: Meeting ID: 892 3746 5190