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Expériences d'interférométrie atomique avec le lithium. Mesure de précision de la polarisabilité électrique

Alain Miffre 1
1 Interférométrie (LCAR)
LCAR - Laboratoire Collisions Agrégats Réactivité
Abstract : This work presents an absolute measurement of the lithium atom electric polarizability using atom interferometry. Our result reduces by a factor of three the uncertainty on this physical quantity. After a detailed study of the lithium atom source, this work describes the construction of the Mach – Zehnder atom interferometer, based on elastic diffraction of the atomic wave by three laser standing waves almost resonant with the first resonance transition of lithium atom. The quality of our interference signals (up to 84.5 % fringe visibility) is then used to do very accurate phase measurements. On top of Zeeman effect, this work studies the influence of an electric field applied on one of the two interfering arms, separated by only 90 micrometers, to achieve a lithium atom polarizability measurement by Lo Surdo – Stark effect.
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Submitted on : Friday, October 7, 2005 - 8:48:53 AM
Last modification on : Friday, February 28, 2020 - 1:52:03 PM
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  • HAL Id : tel-00010300, version 2

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Alain Miffre. Expériences d'interférométrie atomique avec le lithium. Mesure de précision de la polarisabilité électrique. Physique Atomique [physics.atom-ph]. Université Paul Sabatier - Toulouse III, 2005. Français. ⟨tel-00010300v2⟩

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