Stuttgart 2012 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 41: Poster: Ultra-cold plasmas and Rydberg systems
A 41.11: Poster
Donnerstag, 15. März 2012, 16:30–19:00, Poster.V
Molecular-interaction effects on the dipole blockade in cold Rydberg ensembles — •Weibin Li1, Thomas Pohl2, and Jan-Michael Rost2 — 1School of Physics and Astronomy, The University of Nottingham, Nottingham NG7 2RD, UK — 2Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
In high density ultracold gases, the interaction between ground state and Rydberg atoms can lead to the formation of ultralong-range molecules upon direct off-resonant photoassociation [1,2,3]. Here, we study resonant excitation in dipole blocked mesoscopic ensembles, in which all but a single excitation is inhibited by the strong Rydberg-Rydberg interaction. We show that the molecular interactions can have considerable effects on the resulting collective Rabi oscillations and investigate corresponding limitations for proposed implementations of quantum information schemes.
[1] V. Bendkowsky et al., Nature 458, 1005 (2009)
[2] V. Bendkowsky et al., Phys. Rev. Lett. 105, 163201 (2010)
[3] W. Li et al., Science 334, 1110 (2011)