Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 56: Poster III

Q 56.12: Poster

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

Dynamics of quantum-systems with localized dissipation — •Andreas Vogler, Ralf Labouvie, Felix Stubenrauch, Giovanni Barontini, Vera Guarrera, and Herwig Ott — Research Center OPTIMAS, Fachbereich Physik, Technische Universität Kaiserslautern

This Poster addresses the experimental investigation of various quantum systems, subjected to localized dissipative defects.

In our experiment, we are employing a tightly focussed scanning electron-beam, which ionizes atoms of an atomic cloud by electron-impact ionization. The produced ions are then extracted by means of electrostatic optics and detected. This allows us to probe atomic density distributions with high temporal and spatial resolution. Furthermore, the electron-beam is a versatile tool to manipulate the atomic ensemble. It yields the possibility for localized dissipative defects and the preparation of non-equilibrium states. The obtained ion-signal shows the system's reaction on the defect, and allows to measure pair-correlations and Zeno-like behaviour. In addition, subsequently obtained density-profiles allow for a in-vivo investigation. We probe various quantum-systems, ranging from weakly interacting BECs to strongly interacting 1D gases in optical lattices.