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Q: Quantenoptik und Photonik
Q 34: Poster Quantengase
Q 34.15: Poster
Tuesday, March 14, 2006, 16:30–18:30, Labsaal
Micromanipulation of ultra-cold atoms close to conducting surfaces — •Bettina Fischer1, Sebastian Hofferberth1, Stephan Wildermuth1, Thorsten Schumm2, Daniel Gallego1, Igor Lesanovsky1, Mauritz Andersson3, Peter Krueger4, Jose Verdu1, and Jörg Schmiedmayer1 — 1Physikalisches Institut Heidelberg, University of Heidelberg, Philosophenweg 12,D- 69120 Heidelberg, Germany — 2Laboratoire Charles Fabry de l’Institut d’Optique, UMR 8105 du CNRS, F-91403 Orsay, France — 3Department of Microelectronics and Information Technology, The Royal Institute of Technology, SE-164 40, Kista, Sweden — 4Laboratoire Kastler Brossel, Ecole Normale Superieure , 24 Rue Lhomond, F-75005 Paris, France
Cold neutral atoms can be controlled and manipulated in microscopic potentials near surfaces of atom chips. We present the results of various experiments carried out over the last year on our atom chip setup. (1) The realization of a coherent matter-wave beam splitter based on radio-frequency induced adiabatic potentials; (2) The implementation of a "BEC-microscope", where observed density modulations in trapped 1d-BECs are used to reconstruct the current density in a conductor; (3) the characterization of quasi 1d quantum gases and the 1d-3d cross over; (4) experiments with a combined magnetic and optical atom chip trap, demonstrating 2d trapping and Bloch oscillations.
[1] Schumm, T. et al, Nature Physics 1, 57 (2005) [2] Wildermuth S. et al, Nature 435, 440 (2005) [3] Wildermuth, S., Phd thesis, University Heidelberg, (2005)