Hannover 2003 – wissenschaftliches Programm
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Q: Quantenoptik
Q 8: Quantengase 1
Q 8.7: Vortrag
Montag, 24. März 2003, 15:30–15:45, F303
Towards ultracold bosonic and fermionic atoms in an optical lattice — •Thilo Stöferle, Henning Moritz, Christian Schori, Michael Köhl, and Tilman Esslinger — Institute for Quantum Electronics, ETH Zurich
Ultracold atoms trapped in optical lattices allow the study of quantum many-body systems with tunable interactions. A variety of fascinating quantum phenomena, such as BCS-type superfluidity, are theoretically predicted to occur for quantum degenerate fermions. We plan to cool a sample of fermionic Potassium atoms to quantum degeneracy by means of sympathetic cooling with bosonic Rubidium atoms and to load it into an optical lattice.
In the experiment we capture 2· 109 Rubidium atoms in a magneto optical trap which are subsequently magnetically transported into an UHV chamber, where Bose-Einstein condensates of 4· 105 atoms are produced by evaporative cooling. The next steps will be loading of the BEC into the lattice and sympathetic cooling of the potassium atoms. The current status of the experiment will be reviewed.