Hannover 2010 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 17: Ultra-Cold Atoms, Ions and BEC III (with Q)

A 17.4: Vortrag

Donnerstag, 11. März 2010, 11:15–11:30, F 303

Collisions of single ions with ultracold neutral atoms — •Stefan Schmid^{1, 2}, Arne Härter^{1, 2}, and Johannes Hecker Denschlag^{1, 2} — ¹Institut für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria — ²Institut für Quantenmaterie, Universität Ulm, Albert-Einstein-Allee 45, 89081 Ulm, Germany

We have set up an experiment in which a single trapped Ba⁺ ion is immersed into a sea of ultracold neutral Rb atoms.

In the Paul trap we can store single ions as well as strings of several ions cooled to the Doppler limit. We produce our BEC in a QUIC trap and transport it over 30 cm into a linear Paul trap using a moving 1D optical lattice. Subsequently the atoms are loaded into a crossed dipole trap, which is overlapped with the position of the ion.

First experimental results on the collisions of the ion with the ultracold sample are shown.