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Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 40: Poster: Quantum Optics and Photonics II

Q 40.15: Poster

Wednesday, March 8, 2017, 17:00–19:00, P OG2

Gray molasses cooling of 6Li towards a double-degenerate 133Cs-6Li Bose-Fermi mixture — •Manuel Gerken, Stephan Häfner, Binh Tran, Melina Filzinger, Bing Zhu, Juris Ulmanis, and Matthias Weidemüller — Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany

An ultracold Bose-Fermi mixture of 133Cs and 6Li is an ideal system for the study of Efimov’s scenario as well as polarons due to its large mass imbalance and the tunability of intra- and interspecies interactions via Feshbach resonances. Gray molasses on the D1 line of 6Li is newly implemented in the experiment as a further cooling step after Doppler cooling in the MOT. We achieve Sub-Doppler temperatures of down to 42 µK with almost unit capture efficiency. This leads to a tenfold improvement in phase-space density and therefore better starting conditions for the generation of a double-degenerate Bose-Fermi mixture.

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