Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster III
Q 56.21: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
Setup for an ultracold Bose-Fermi mixture of 133Cs and 6Li — •Stephan Häfner, Marc Repp, Rico Pires, Juris Ulmanis, Robert Heck, Arthur Schönhals, Eva Kuhnle, and Matthias Weidemüller — Physikalisches Institut, Ruprecht- Karls-Universität Heidelberg, Heidelberg, Germany
A mixture of ultracold 133Cs and 6Li atoms and molecules close to quantum degeneracy permits to study many different aspects of few and many body physics. Feshbach resonances provide a precise tunability of interspecies interactions [1]. The LiCs mixture is a particulary promising candidate to observe Efimov states [2], since it has a small universal scaling factor. Besides, the LiCs dimer has the largest dipole moment of 5.5 Debye of all stable alkali combinations [3], which can be exploited to form dipolar molecules via Feshbach association and study dipolar effects.
In this poster we will present the experimental approach and the current status of our experimental apparatus for cooling and trapping of fermionic Li and bosonic Cs atoms. The present procedure combines various cooling methods, including double species Zeeman slowing, Raman sideband cooling and forced evaporation out of an optical dipole trap that allows to prepare a Bose-Fermi mixture at microklevin temperatures.
[1] M. Repp et al., Phys. Rev. A, in press
[2] E. Braaten and H.-W. Hammer, Annals of Physics 322, 120 (2007)
[3] J. Deiglmayr et al., Phys. Rev. A 82, 032503 (2010)