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Transitions landau-zener de paires d'atomes de Rydberg froids en interaction dipole-dipole

Abstract : This thesis deals with the study of dipole-dipole interaction between Rydberg atoms, in particular of Landau-Zener transitions around a Förster resonance for Rydberg atoms pairs. The adiabaticity of the transition depends of the interatomic distance and is controlled by a time-dependant electric field. The adiabatic transition efficiency is the control knob to probe the nearest neighbour distribution. We infer a new and original method to measure the density of a gas very accurately by probing the nearest neighbour distibution in the gas, which depends parametrically on its density. Such adiabatic transitions should leave the pair of Rydberg atoms in an entangled state. We investigated how quantum fluctuations could reveal the atom entanglement, in two-atom Rabi oscillation measurements.
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https://tel.archives-ouvertes.fr/tel-00661626
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Submitted on : Friday, January 20, 2012 - 11:13:16 AM
Last modification on : Friday, October 7, 2022 - 3:48:15 AM
Long-term archiving on: : Saturday, April 21, 2012 - 2:26:01 AM

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  • HAL Id : tel-00661626, version 1

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Anne Cournol. Transitions landau-zener de paires d'atomes de Rydberg froids en interaction dipole-dipole. Autre [cond-mat.other]. Université Paris Sud - Paris XI, 2011. Français. ⟨NNT : 2011PA112343⟩. ⟨tel-00661626⟩

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