Quantum non-demolition measurements in optics

被引:405
作者
Grangier, P
Levenson, JA
Poizat, JP
机构
[1] CNRS, Inst Opt, Lab Charles Fabry, URA 14, F-91403 Orsay, France
[2] CNET, France Telecom, DTD, Lab Bagneux,CNRS,URA 250, F-92225 Bagneux, France
关键词
D O I
10.1038/25059
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Quantum non-demolition measurements are designed to circumvent the limitations imposed by Heisenberg's uncertainty principle when performing repeated measurements of quantum states. Recent progress in quantum optics has enabled the experimental realization of quantum non-demolition measurements of the photon flux of a light beam. This achievement bears on fundamental issues about the ultimate sensitivity of measurements, and may open the way for applications such as noise-free information tapping in optical telecommunications.
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页码:537 / 542
页数:6
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