Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 56: Poster III

Q 56.60: Poster

Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof

Sequential loading of a conservative potential — •Ilka Geisel¹, Jan Mahnke¹, Carsten Klempt¹, Wolfgang Ertmer¹, and Kai Cordes² — ¹Institut für Quantenoptik, Leibniz Universität Hannover — ²Institut für Informationsverarbeitung, Leibniz Universität Hannover

We investigate guiding and trapping of rubidium atoms on a mesoscopic chip structure with millimeter-scale wires.

This structure is used to create a quadrupole field for a magneto-optical trap, a magnetic guide and a flexible magnetic trapping potential. In our experiments, the guide allows us to transport cold atoms into a region that provides better vacuum conditions and very effective stray light protection. It is therefore particularly well suited to simultaneously trap and collect atoms.

We show that our control of the local magnetic fields and the effective light shielding enable us to load another MOT without significantly reducing the lifetime of previously trapped atoms. We present first results on sequential loading mechanisms with regard to continuous loading of a conservative potential [1].

[1] Continuous loading of a non-dissipative atom trap C. F. Roos et al 2003 Europhys. Lett. 61 187