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Pré-Publication, Document De Travail Année : 2005

Measurement of the electric polarizability of lithium by atom interferometry

Alain Miffre
Matthias Büchner
Gérard Trénec
  • Fonction : Auteur
  • PersonId : 919535
Jacques Vigué
  • Fonction : Auteur
  • PersonId : 828346

Résumé

We have built an atom interferometer and, by applying an electric field on one of the two interfering beams, we have measured the static electric polarizability of lithium with a 0.66 % uncertainty. Our experiment is similar to an experiment done on sodium in 1995 by D. Pritchard and co-workers, with several improvements: the electric field can be calculated analytically and our phase measurements are very accurate. This experiment illustrates the extreme sensitivity of atom interferometry: when the atom enters the electric field, its velocity increases and the fractional change, equal to 4 x 10^(-9) for our largest field, is measured with a 10^(-3) accuracy.
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Dates et versions

hal-00005359 , version 1 (14-06-2005)

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Alain Miffre, Marion Jacquey, Matthias Büchner, Gérard Trénec, Jacques Vigué. Measurement of the electric polarizability of lithium by atom interferometry. 2005. ⟨hal-00005359⟩
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