Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie

Q 57.74: Poster

Donnerstag, 17. März 2011, 16:30–19:30, P1

Spectroscopic determination of YbRb ground state potentials — Frank Münchow, •Cristian Bruni, Maximilian Madalinski, and Axel Görlitz — Institut für Experimentalphysik, HHU Düsseldorf, 40225 Düsseldorf

Ultracold heteronuclear molecules offer fascinating perspectives ranging from ultracold chemistry to novel interactions in quantum gases. In our experiment, the ultimate goal is the production of ultracold YbRb molecules in the electronic and rovibrational ground state. The special property of these molecules is that they possess a magnetic as well as an electric dipole moment. As a first step, we have already observed the production of weakly bound and vibrationally highly excited molecules via photoassociation in a combined magneto-optical trap close to the Rb D1-line at 795 nm [1].The next step which is currently under investigation is the spectroscopic determination of the vibrational structure of the electronic ground state. This will be done by so-called Autler-Townes spectroscopy where a second laser is used to probe transitions between the ground and excited molecular state. The knowledge of the molecular binding energies and thus the potential curves will be crucial on the way to the formation of ground state molecules either by STIRAP or using Feshbach resonances.
N. Nemitz, F. Baumer, F. Münchow and A. Görlitz, Phys. Rev. A 79, 061403(R) (2009)