Beating quantum limits in an optomechanical sensor by cavity detuning

被引:78
作者
Arcizet, O [1 ]
Briant, T [1 ]
Heidmann, A [1 ]
Pinard, M [1 ]
机构
[1] Lab Kastler Brossel, F-75252 Paris 05, France
来源
PHYSICAL REVIEW A | 2006年 / 73卷 / 03期
关键词
D O I
10.1103/PhysRevA.73.033819
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We study the quantum limits in an optomechanical sensor based on a detuned high-finesse cavity with a movable mirror. We show that the radiation pressure exerted on the mirror by the light in the detuned cavity induces a modification of the mirror dynamics and makes the mirror motion sensitive to the signal. This leads to an amplification of the signal by the mirror dynamics, and to an improvement of the sensor sensitivity beyond the standard quantum limit, up to an ultimate quantum limit only related to the mechanical dissipation of the mirror. This improvement is somewhat similar to the one predicted in detuned signal-recycled gravitational-wave interferometers, and makes a high-finesse cavity a model system to test these quantum effects.
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页数:8
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