Frankfurt 2006 – scientific programme

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Q: Quantenoptik und Photonik

Q 34: Poster Quantengase

Q 34.9: Poster

Tuesday, March 14, 2006, 16:30–18:30, Labsaal

Interacting Rubidium and Caesium atoms — •Michael Haas, Daniel Frese, Christian Grachtrup, Shincy John, Vanessa Leung, Dietmar Haubrich, Arno Rauschenbeutel und Dieter Meschede — Institut für Angewandte Physik, Universität Bonn, Wegelerstr. 8, 53115 Bonn

Our experimental set up allows us to cool Rubidium to quantum degeneracy and magnetically trap Rubidium and Caesium simultaneously. We are able to selectively cool Rubidium by forced evaporation on the 6.8 GHz hyperfine transition. By analysing measurements of the thermalisation dynamics, the interspecies scattering cross section can be calculated, which at ultra cold temperatures is determined by the s-wave scattering length.