Hannover 2020 – scientific programme

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SYCM: Symposium Hot topics in cold molecules: From laser cooling to quantum resonances

SYCM 1: Hot topics in cold molecules: From laser cooling to quantum resonances

SYCM 1.2: Invited Talk

Friday, March 13, 2020, 11:30–12:00, e415

Cold polyatomic molecules — •Gerhard Rempe — Max-Planck Institute of Quantum Optics, Hans-Kopfermann Straße 1, 85748 Garching, Germany

Cold polyatomic molecules provide fascinating research possibilities in physics and chemistry, especially when the density is high enough for collisions to take place. Reaching the cold collision regime, however, is a challenge, as polyatomic molecules require radically new control techniques. Thanks to electrostatic skimming, guiding and trapping as well as opto-electric Sisyphus and cryogenic buffer-gas cooling combined with mechanical centrifuge deceleration it is now possible to produce high-density trapped ensembles of, e.g., cold fluoromethane and formaldehyde molecules. This allows for long-range dipolar-collision studies, narrow-linewidth magic-transition spectroscopy, and the exploration of coherence-preserving internal dynamics. The talk introduces the basic techniques and discusses recent achievements.