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Article Dans Une Revue Journal of Optics B Quantum and Semiclassical Optics Année : 2004

Entanglement and squeezing in a two-mode system: theory and experiment

Vincent Josse
Aurélien Dantan
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Alberto Bramati
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Elisabeth Giacobino
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Résumé

We report on the generation of non separable beams produced viathe interaction of a linearly polarized beam with a cloud of coldcesium atoms placed in an optical cavity. We convert the squeezingof the two linear polarization modes into quadratureentanglement and show how to find out the best entanglementgenerated in a two-mode system using the inseparability criterionfor continuous variable [Duan et al., Phys. Rev. Lett.84, 2722 (2000)]. We verify this method experimentallywith a direct measurement of the inseparability using two homodynedetections. We then map this entanglement into a polarizationbasis and achieve polarization entanglement.
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Dates et versions

hal-00000775 , version 1 (22-10-2003)
hal-00000775 , version 2 (07-11-2003)

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Vincent Josse, Aurélien Dantan, Alberto Bramati, Elisabeth Giacobino. Entanglement and squeezing in a two-mode system: theory and experiment. Journal of Optics B Quantum and Semiclassical Optics, 2004, 6, pp.532. ⟨hal-00000775v2⟩
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