Hamburg 2009 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 29: Poster I
Q 29.2: Poster
Dienstag, 3. März 2009, 16:30–19:00, VMP 8 Foyer
Towards a dense and ultracold gas of polar molecules — •Marc Repp1,2, Johannes Deiglmayr2, Anna Grochola2, Roland Wester2, and Matthias Weidemüller1,2 — 1Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg — 2Physikalisches Institut, Albert-Ludwigs-Universität Freiburg
During the last year we investigated the formation of LiCs molecules in the rovibrational groundstate X1Σ+,v″=0,J″=0 [1]. Such dipolar molecules are promising candidates to explore new quantum phases, like the formation of dipolar crystals of trapped polar molecules [2]. At this poster we will present our molecular production scheme via photoassocation (PA) in a double species MOT. Currently we are upgrading our system for reaching higher molecular phase-space densities. Therefore we will precool Cesium atoms from a MOT via Raman sideband cooling and transfer them afterwards into an optical dipole trap. Gravity will be compensated by a magnetic gradient field. In a next step, we will load Lithium atoms from a MOT in the same trap and use the Cs atoms as a refrigerator. In a final step the phase-space density of the ensemble will be increased by evaporative cooling. This will be the starting point for producing a quantum-degenerate gas of polar molecules.
[1] J. Deiglmayr et al., Phys. Rev. Lett. 101, 133004 (2008)
[2] G. Pupillo et al., Phys. Rev. Lett. 100, 050402 (2008)