EXPERIMENTAL REALIZATION OF A QUANTUM OPTICAL TAP

被引：111

作者：

POIZAT, JP

GRANGIER, P

机构：

[1] Institut d'Optique, 91403 Orsay

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.70.271

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 transfer compared to any classical optical tap, where a perfect quantum duplicator would reach the ideal value of 2.

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页码：271 / 274

页数：4

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