Observation of back-action noise cancellation in interferometric and weak force measurements

被引：68

作者：

Caniard, T. ^{[1
]}

Verlot, P. ^{[1
]}

Briant, T. ^{[1
]}

Cohadon, P. -F. ^{[1
]}

Heidmann, A. ^{[1
]}

机构：

[1] Univ Paris 05, CNRS, ENS, Lab Kastler Brossel, Case 74,4 Pl Jussieu, F-75005 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.99.110801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally demonstrate a cancellation of back-action noise in optical measurements. Back-action cancellation was first proposed within the framework of gravitational-wave detection by dual resonators as a way to drastically improve their sensitivity. We have developed an experiment based on a high-finesse Fabry-Perot cavity to study radiation-pressure effects in ultrasensitive displacement measurements. Using an intensity-modulated intracavity field to mimic the quantum radiation-pressure noise, we report the first observation of back-action cancellation due to a coherent mechanical response of the mirrors in the cavity to the radiation-pressure noise. We have observed a sensitivity improvement by a factor larger than 20 both in displacement and weak-force measurements.

引用

页数：4

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