Bonn 2025 – scientific programme

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MO: Fachverband Molekülphysik

MO 26: Poster – Cold Molecules (joint session MO/Q)

MO 26.2: Poster

Thursday, March 13, 2025, 17:00–19:00, Tent

Photoassociation Spectroscopy of RbYb near the Yb intercombination line — •Céline Castor, Christian Sillus, Arne Kallweit, and Axel Görlitz — Uni Düsseldorf

Ultracold dipolar molecules constitute a promising system for the investigation of topics like ultracold chemistry, novel interactions in quantum gases, precision measurements and quantum information. Here we report on first experiments in our apparatus for the production of ultracold RbYb molecules. This setup constitutes an improvement of our old apparatus, where the interactions in RbYb and possible routes to molecule production have already been studied extensively. In the new setup a major goal is the efficient production of ground state RbYb molecules. We employ optical tweezers to transport individually cooled samples of Rb and Yb from their separate production chambers to a dedicated science chamber. Here we start to study interspecies interactions of different isotopes by overlapping crossed optical dipole traps. To explore the pathways towards ground state molecules we start with photoassociation spectroscopy near the intercombination line of Yb.

Keywords: molecular; spectroscopy; dipolar; ytterbium; rubidium