Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 34: Kalte Atome: Manipulation und Detektion

A 34.7: Vortrag

Donnerstag, 15. März 2012, 15:30–15:45, V7.03

Trapping and guiding atoms on a mesoscopic chip structure — •Jan Mahnke¹, Stefan Jöllenbeck¹, Ilka Geisel¹, Jan Arlt², Wolfgang Ertmer¹, and Carsten Klempt¹ — ¹Institut für Quantenoptik, Leibniz Universität Hannover, Deutschland — ²Department of Physics and Astronomy, Aarhus University, Denmark

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 this 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. This enables reloading the magnetic guide and may lead towards a continuous loading scheme [1].

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