Fundamental Quantum Science Program
Seminar series No.6

●Date & Time : Wednesday 25th September 2024 16:00-17:30●Venue : # Room309, Frontier Research Laboratory

Prof. John M. Doyle
Department of Physics, Harvard University" Cold and ultra‐cold molecules for quantum science "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 talk will discuss the arc of research efforts using cold andultracold molecules for BSM searches. Starting with an update on the ACME
experiment and ending with proposed experiments using ultracold polyatomic
molecules with octupole deformed nuclei, the goal is to place in the status of our workin technical context. The possible discovery of BSM physics has led to many
experimental efforts to cool and control molecules at the single quantum state level.
Polyatomic molecules have attracted new focus as potential novel quantum resources
with distinct advantages ‐ and challenges ‐ compared to both atoms and diatomic
molecules. I will discuss features of polyatomic molecules can be used in the search for
BSM physics, as well as quantum simulation/computation and ultracold chemistry. I will
discuss our results on the laser cooling of molecules into the ultracold regime, including
the laser cooling of the polyatomic molecules SrOH, YbOH, CaOH and CaOCH3. Finally,
if time permits, I will discuss a new type of MOT that increases molecular density by anorder of magnitude – important for mode matching MOT clouds of ultracold molecules
to conservative optical traps for precision measurements.

・Hosted by : Dr. Naoto Nagaosa(Fundamental Quantum Science Program)Fundamental Quantum Science Program
Seminar series No.6

Short Biography
John Doyle, Henry B. Silsbee Professor of Physics, Harvard University, grew up in the U.S.
and received his bachelor’s (1986) and Ph.D. (1991) degrees from the Massachusetts
Institute of Technology (M.I.T.). After being a postdoc at M.I.T., he joined Harvard
University as an assistant professor of physics in 1993. John Doyle's research centers onusing cold molecules for science including particle physics, collisions, and quantuminformation. Starting with the development a new technique for producing heavy, polar
radical molecules in an intense cold beam, he launched with collaborators searches forphysics beyond the Standard Model (BSM) through probing for the electron electric
dipole moment. His group is a pioneer in the cooling and trapping of molecules,
studying collisional processes in atoms and molecules and developing tools to achieve
full quantum control over increasingly complex molecular systems. They pioneered thelaser cooling of polyatomic molecules and are working to realize new techniques to trap
and study interactions in polyatomic molecules. John Doyle is the co‐Director of theHarvard Quantum Initiative, director of the Japanese Undergraduate Research
Exchange Program (JUREP), and he co‐founded the Harvard/MIT Center for Ultracold
Atoms, where for twenty years he was co‐director. He has published papers in the areasof ultracold atoms, molecules, spectroscopy, precision measurement, ultracold
neutrons, respiratory disease transmission mitigation, and dark matter detection andsupervised the PhDs of over thirty students. He is a Humboldt, Fulbright, and American
Physical Society (APS) Fellow and is currently president‐elect of the American PhysicalSociety (president in 2025). He is winner of the Broida and Ramsey prizes.

・Hosted by : Dr. Naoto Nagaosa(Fundamental Quantum Science Program)