Hannover 2010 – scientific programme
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A: Fachverband Atomphysik
A 9: Ultra-Cold Atoms, Ions and BEC II (with Q)
A 9.1: Talk
Wednesday, March 10, 2010, 10:30–10:45, F 303
Creating versatile atom traps by combining laser light and magnetic fields — •Stephan Middelkamp1, Michael Mayle1, Igor Lesanovsky2, and Peter Schmelcher1 — 1Zentrum für Optische Quantentechnologien, Universität Hamburg, Hamburg, Germany — 2School of Physics and Astronomy, Faculty of Science, University of Nottingham, Nottingham, UK
We utilize the combination of two standard trapping techniques, a magnetic trap and an optical trap in a Raman setup, to propose a new versatile and tunable trap for cold atoms. The thus created potential has got several advantages compared to conventional trapping potentials: One can easily convert the type of the trap, e.g. from a single well to a double well trap. One can trap atoms in different internal states in different trap types enabling the realization of new experiments with multi-component Bose-Einstein condensates. One can achieve variations of the trapping potential on small length scales (∼µm) without the need for microstructures. We present the potential surfaces for different setups, show their tunability, give a semi-analytical expression for the potential, and propose experiments which can be realized within such a trap.