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Hannover 2016 – wissenschaftliches Programm

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SYPS: PhD Symposium Synthesized Gauge Fields and Experimental Realizations

SYPS 1: Synthesized Gauge Fields and Experimental Realizations

SYPS 1.3: Hauptvortrag

Dienstag, 1. März 2016, 15:30–16:00, e415

Controlling and Exploring Topological Bloch Bands Using Ultracold Atoms — •Immanuel Bloch — Max-Planck Institut für Quantenoptik, Hans Kopfermann Str. 1, 85748 Garching, Germany — Ludwig-Maximilians Universität, Schellingstr. 4, 80799 München, Germany

In my talk, I will show how recent experiments with cold gases in optical lattices have enabled to realise and probe artificial magnetic fields that lie at the heart of topological energy bands in a solid. Using a novel ``Aharonov-Bohm'' type interferometer that acts within the momentum space, we are e.g. now able to fully determine experimentally the geometric structure of an energy band. Furthermore, transport measurements in 2d and 1d topological bands have enabled us to realize static and dynamic analogues of the Integer Quantum Hall effect. In 1d, this constitutes the first experimental realization of the celebrated Quantum Pump, proposed more than 30 years ago David Thouless.

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DPG-Physik > DPG-Verhandlungen > 2016 > Hannover