"Ultracold polyatomic molecules: a quantum toolbox for fundamental investigation"

Who: Martin Zeppenfeld, Max-Planck Institut for Quantum Optics, Garching

Place: Online Seminar, Donostia International Physics Center

Date: Thursday, 16 September 2021, 12:00

Quantum control of molecules at ultracold temperatures
provides enormous potential for groundbreaking discoveries. Precision
measurements on molecules provide insight on physics beyond the standard
model and might help answer fundamental questions related to the origin
of life. The many internal degrees of freedom and long range
dipole-dipole interactions provide valuable resources for quantum
information processing. Full quantum control of chemical reaction
pathways provides opportunities to test and validate ab initio methods.
Strong long-range dipole-dipole interactions in a molecular quantum
degenerate gas would allow investigation of new quantum phases of matter.

Motivated by these efforts, the last decade has seen enormous progress
in development of experimental techniques to provide the required
ultracold molecule ensembles. Here, my group has pioneered a number of
techniques providing us with unique possibilities to control and
manipulate polyatomic molecules. This includes a centrifuge decelerator
to slow bright molecular beams from a cryogenic buffergas source, a
microstructured electric trap allowing molecules to be confined on
minute timescales, and optical pumping on vibrational transitions
allowing cooling and internal state control of molecules without optical
cycling transitions.

In my talk, I will provide an overview of the field and introduce the
various techniques we have developed. This includes my latest project,
using Rydberg atoms as a highly sensitive nondestructive detector of
cold molecules.

Host: Geza Giedke

ZOOM: https://dipc-org.zoom.us/j/84957859912
YouTube: https://youtu.be/GRkRMotdZzM

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