Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Ultracold plasmas and Rydberg systems (with A)
Q 43.2: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
Correlations and many-body dynamics of Rydberg excitations in the anti-blockade regime — •Fabian Letscher1,2, Oliver Thomas1,2, Thomas Niederprüm1, Tanita Eichert1, Michael Fleischhauer1, and Herwig Ott1 — 1Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Germany — 2Graduate School Materials Science in Mainz, Gottlieb-Daimler-Strasse 47, 67663 Kaiserslautern, Germany
We present experimental and theoretical studies of the many-body dynamics of Rydberg excitations in an optically driven lattice gas in the dissipative anti-blockade regime. Making use of continuous ionization of atoms in a Rydberg state we monitor the time evolution and temporal correlations of Rydberg excitations. We observe large relaxation times (compared to the lifetime of a Rydberg excitation) and strong bunching. To describe the approximate dynamics of the system, we use an efficient many-body rate equation method and compare them with experimental results. Moreover, we construct a simple cluster model which allows a qualitative understanding of the experimental data.