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A: Fachverband Atomphysik

A 28: Poster Session - Atomic Physics IV

A 28.18: Poster

Donnerstag, 12. März 2020, 16:00–18:00, Empore Lichthof

Roadmap to Rb-Sr dipolar rovibronic ground-state molecules — •premjith thekkeppatt, lukas reichsöllner, vincent barbé, severin charpignon, benjamin pasquiou, klaasjan van druten, and florian schreck — Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam

Ultracold dipolar molecules offer an ideal platform for investigations in the fields of quantum simulation, precision measurements and quantum chemistry. Thus far, the ultracold polar molecules that have been produced are closed-shell molecules, which limits their range of application. Our goal is to produce RbSr ultracold, polar, open-shell molecules, in order to extend the range of possibilities offered by ultracold molecular physics. We present an efficient quantum-engineering approach to the production of RbSr molecules. The first step is the creation of Rb-Sr atom pairs in the ground-state of an optical lattice, starting from quantum-degenerate clouds of 87Rb and 84Sr. The following step is the magneto-association of these atom pairs into weakly-bound molecules, using a magnetic Feshbach resonance that we identified and that should allow efficient molecular association. With this aim, we designed a highly stable power supply for high magnetic fields, in order to achieve efficient adiabatic transfers from the atom pair state to the weakly-bound molecular state. We describe the laser system that we intend to use for the final step of the molecule production, which is the coherent state-transfer to the rovibronic ground-state using STImulated Raman Adiabatic Passage (STIRAP).