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Cooperative excitation and many-body interactions in a cold Rydberg gas

Viteau, Matthieu and Huillery, Paul and Bason, Mark G. and Malossi, Nicola and Ciampini, Donatella and Morsch, Oliver and Arimondo, Ennio and Comparat, Daniel and Pillet, Pierre (2012) Cooperative excitation and many-body interactions in a cold Rydberg gas. arXiv .

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The dipole blockade of Rydberg excitations is a hallmark of the strong interactions between atoms in these high-lying quantum states. One of the consequences of the dipole blockade is the suppression of fluctuations in the counting statistics of Rydberg excitations, of which some evidence has been found in previous experiments. Here we present experimental results on the dynamics and the counting statistics of Rydberg excitations of ultra-cold Rubidium atoms both on and off resonance, which exhibit sub- and super-Poissonian counting statistics, respectively. We compare our results with numerical simulations using a novel theoretical model based on Dicke states of Rydberg atoms including dipole-dipole interactions, finding good agreement between experiment and theory.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/03 - Fisica della materia
Divisions: Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA
Depositing User: dott.ssa Sandra Faita
Date Deposited: 29 Jan 2014 23:44
Last Modified: 29 Jan 2014 23:44
URI: http://eprints.adm.unipi.it/id/eprint/1399

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