首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Quantum non-demolition measurements in optics: a review and some recent experimental results
Authors:J F Roch  G Roger  P Grangier  J-M Courty  S Reynaud
Institution:(1) Institut d'Optique, B.P. 147, F-91403 Orsay Cédex, France;(2) Laboratoire de Spectroscopie Hertzienne, F-75252 Paris Cédex, France
Abstract:We review the schemes which have been implemented, in order to achieve quantum non-demolition (QND) measurements in the optical domain. The simplest schemes can be obtained using the optical Kerr effect, which yields a crossed-phase modulation coupling between two light beams. Other schemes use either independently generated squeezed light, or coupled-mode parametric amplifiers. These various schemes can be characterized using three criteria, which describe, respectively, the quality of the quantum measurement, the non-destruction of the signal, and the conditional variance of the output signal beam, given the output ldquometerrdquo beam (quantum-state preparation criterion). We show that quantitative limits can be defined with respect to these criteria, delimiting ldquoclassicalrdquo and ldquoquantumrdquo domains of operation. Then we present in more detail a new experimental implementation of QND measurements, using three-level atoms inside a doubly-resonant optical cavity.
Keywords:42  50  Dv  42  50  Lc  03  65  Bz
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号