Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 32: Poster: Quantum gases, ultracold atoms and molecules

Q 32.40: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

Dynamics of Quantum-Systems with Localized Dissipation — •Ralf Labouvie, Andreas Vogler, Simon Heun, Bodhaditya Santra, and Herwig Ott — Fachbereich Physik and Research Center OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany

In our experiment, we are employing a tightly focussed scanning electron-beam on ultra-cold atoms to locally remove particles. 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 e.g. it yields the possibility for localized dissipative defects and therefore to create open quantum-systems. The obtained signal shows the system's reaction on the defect and allows to measure pair-correlations and Zeno-like behaviour. This method can also be used to engineer non-equilibrium states and investigate their time evolution e.g. tunnel dynamics in an one-dimensional optical lattice. In addition, subsequently obtained density-profiles allow for an in-vivo investigation of all the samples.