Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 65: Poster – Cold Molecules (joint session MO/Q)
Q 65.8: Poster
Thursday, March 13, 2025, 17:00–19:00, Tent
Collisions in a quantum gas of bosonic 23Na39K molecules — •Mara Meyer zum Alten Borgloh1, Jule Heier1, Philipp Gersema1, Kai Konrad Voges3, Charbel Karam2, Olivier Dulieu2, Leon Karpa1, and Silke Ospelkaus1 — 1Leibniz Universität Hannover, Institut für Quantenoptik — 2Université Paris- Saclay, CNRS, Laboratoire Aimé Cotton — 3Centre for Cold Matter, Blackett Laboratory, Imperial College London
We present our experiments with quantum gases of polar 23Na39K molecules, discussing both atom-molecule and molecule-molecule collisions. In particular, we investigate the origins of loss processes in a cloud of chemically stable molecules and share our observations of magnetically tunable resonances between NaK and K. Furthermore, we outline a method for suppressing molecular loss by using a coherent two-photon transition to create a potential barrier, which prevents the colliding molecules from reaching the short-range.
Keywords: Ultracold Molecules; Shielding; Molecular Collisions