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Claude Cohen Tannoudji

Prix Nobel en 1997 pour le ralentissement et le piégeage des atomes par la lumière laser.

Ses travaux sont à la source des recherches actuelles de l'IFRAF.



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Accueil du site > Thèses et habilitations > Atomic four-wave mixing in an optical lattice

Atomic four-wave mixing in an optical lattice

PhD thesis defense of Marie Bonneau (Institut d’Optique)

On Friday, 16th of December 2011 at 14:30 in the auditorium of Institut d’Optique, 2 avenue Augustin Fresnel, Palaiseau.

Abstract :

This thesis describes the production of correlated atom pairs through four-wave mixing in an optical lattice. The twin atoms are analogous to the twin photons produced by parametric down conversion, used in many fundamental quantum optics experiments.

Because of the dispersion relation and phase matching, spontaneous generation of pairs can occur when atoms move in an optical lattice. The experiment uses a degenerate gas of metastable helium atoms and 3D resolved, single atom detection. We show that atoms are preferentially scattered into two narrow classes with tunable velocities and populations.

We observe particle correlations and relative number squeezing. I shall discuss perspectives for using this technique for the realization of two particle interference experiments such as the Hong-Ou-Mandel effect for atoms.

Jury :

  • Jean-Claude Garreau (rapporteur)
  • Franck Pereira Dos Santos (rapporteur)
  • Michèle Leduc (examinatrice)
  • Fabien Bretenaker (examinateur)
  • Christoph Westbrook (directeur de thèse)
  • Alain Aspect
  • Denis Boiron

This thesis was conducted in the Atom Optics group of the Laboratoire Charles Fabry, under the supervision of Christoph Westbrook.


Post-scriptum :

Laboratoire Charles Fabry de l’Institut d’Optique,
Atom Optics Group
Campus Polytechnique
2 av. Augustin Fresnel
RD 128
F-91127 Palaiseau Cedex
+33 (0)1.64.53.33.40


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