Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 45: Quantum gases: Bosons II
Q 45.4: Vortrag
Donnerstag, 21. März 2013, 11:45–12:00, F 342
Compact mixture of degenerate quantum gases — •Katerine Posso-Trujillo, Holger Ahlers, Ernst M. Rasel, and Naceur Gaaloul — Institut für Quantenoptik, Leibniz Universität Hannover
Recent proposals in atom optics rely on long-lived samples of ultra-cold matter. Having compact sources (no more than mm range in radius) is necessary to prevent decoherence over long times and more strictly dephasing due to the spatial extension of the sample. A possible solution is to use the δ-kick technique to collimate the expanding BEC source, however this technique has to be adapted to the case of a quantum mixture.
During this talk, we will provide a clear method for preparing a mixture of 85Rb/87Rb which stays compact for several seconds.
The recipe includes the production of a miscible and stable mixture of the two Rb isotopes. The δ-kick cooling of both with realistic parameters of magnetic fields used, and laser beams.