QUANTUM NONDEMOLITION MEASUREMENT OF SMALL PHOTON NUMBERS BY RYDBERG-ATOM PHASE-SENSITIVE DETECTION

被引：427

作者：

BRUNE, M

HAROCHE, S

LEFEVRE, V

RAIMOND, JM

ZAGURY, N

机构：

[1] Département de Physique de l'Ecole Normale Supérieure, Laboratoire de Spectroscopie Hertzienne, F-75231 Paris Cedex 05

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.65.976

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe a new quantum nondemolition method to monitor the number N of photons in a microwave cavity. We propose coupling the field to a quasiresonant beam of Rydberg atoms and measuring the resulting phase shift of the atom wave function by the Ramsey separated-oscillatory-fields technique. The detection of a sequence of atoms reduces the field into a Fock state. With realistic Rydberg atom-cavity systems, small-photon-number states down to N=0 could be prepared and continuously monitored. © 1990 The American Physical Society.

引用

页码：976 / 979

页数：4

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