Abstract : We have realized a system which is able to read out information encoded on the amplitude of a laser beam without degrading the signal-to-noise ratio of the carrier. This has been implemented using the two-photon cross-phase-modulation effect of a three-level system in a sodium atomic beam located in a doubly resonant optical cavity. We have achieved an improvement by a factor of 1.35 of the overall information transer compared to any classical optical tap, where a perfect quantum duplicator would reach the ideal value of 2.
https://hal-iogs.archives-ouvertes.fr/hal-00559077
Contributeur : Philippe Grangier
<>
Soumis le : vendredi 15 avril 2016 - 15:19:57
Dernière modification le : jeudi 11 janvier 2018 - 06:26:09
Document(s) archivé(s) le : samedi 16 juillet 2016 - 13:22:33
