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DPG

Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster: Quantum Optics and Photonics I

Q 15.23: Poster

Montag, 23. März 2015, 17:00–19:00, C/Foyer

Investigating a strongly correlated quantum gas with competing short-range and cavity-mediated long-range interactions — •Lorenz Hruby, Renate Landig, Nishant Dogra, Rafael Mottl, Tobias Donner, and Tilman Esslinger — ETH Zürich, Zürich, Schweiz

We report on our study of superfluid, supersolid and Mott-insulating phases and the corresponding quantum phase transitions in a quantum gas coupled to an optical high-finesse cavity. The cavity mediates long-range interactions, whereas additional classical optical lattices give rise to short-range interactions. We investigate the competition between these short- and long-range interactions, which results in a rich phase diagram going beyond the classical Bose-Hubbard phase diagram. The openness of the cavity allows us to extract real - time information on atomic density fluctuations and excitations in the system.

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