Ultracold polyatomic molecules: a quantum toolbox for fundamental investigation

Quantum control of molecules at ultracold temperaturesprovides enormous potential for groundbreaking discoveries. Precisionmeasurements on molecules provide insight on physics beyond the standardmodel and might help answer fundamental questions related to the originof life. The many internal degrees of freedom and long rangedipole-dipole interactions provide valuable resources for quantuminformation processing. Full quantum control of chemical reactionpathways provides opportunities to test and validate ab initio methods.Strong long-range dipole-dipole interactions in a molecular quantumdegenerate gas would allow investigation of new quantum phases of matter.
Motivated by these efforts, the last decade has seen enormous progressin development of experimental techniques to provide the requiredultracold molecule ensembles. Here, my group has pioneered a number oftechniques providing us with unique possibilities to control andmanipulate polyatomic molecules. This includes a centrifuge deceleratorto slow bright molecular beams from a cryogenic buffergas source, amicrostructured electric trap allowing molecules to be confined onminute timescales, and optical pumping on vibrational transitionsallowing cooling and internal state control of molecules without opticalcycling transitions.
In my talk, I will provide an overview of the field and introduce thevarious techniques we have developed. This includes my latest project,using Rydberg atoms as a highly sensitive nondestructive detector ofcold molecules.
Host: Geza Giedke
ZOOM: https://dipc-org.zoom.us/j/84957859912YouTube: https://youtu.be/GRkRMotdZzM

Online Seminar, Donostia International Physics Center


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

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