Frankfurt 2006 – wissenschaftliches Programm

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Q: Quantenoptik und Photonik

Q 34: Poster Quantengase

Q 34.15: Poster

Dienstag, 14. März 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)