Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie

Q 57.66: Poster

Donnerstag, 17. März 2011, 16:30–19:30, P1

Towards experiments with ultracold Rydberg gases at high atomic densities — •Aline Faber, Hannes Busche, Christoph Hofmann, Georg Günter, Hanna Schempp, Martin de Saint-Vincent, Shannon Whitlock und Matthias Weidemüller — Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg

Rydberg atoms have gained much interest in recent years due to the remarkable fact that their properties like the dipole-dipole interaction or the lifetime can readily be tuned over several orders of magnitude [1]. Latest developments are aiming for effects occurring in ultracold and very dense atomic samples, like Ryberg-ground state molecule formation [2] or dynamical crystallization [3].

We report on the status of our new Rydberg apparatus. The setup combines large optical access with a high level of electric field control. A compact 2D-MOT serves as a high flux source of cold atoms. Combined with all-optical Bose-Einstein condensation in an optical trap at 1064nm the new apparatus will allow for duty cycles of several seconds. The large optical access makes the setup versatile and will allow us to perform Rydberg excitation in very dense atomic samples as well as in optical lattices.

[1] Saffman et al., Rev.Mod.Phys. 82, 2313 (2010)

[2] Bendkowsky et al., Nature 458, 1005 (2009)

[3] Pohl et al., Phys.Rev.Lett. 104, 043002 (2010)