Quantum-enhanced micromechanical displacement sensitivity

被引：62
|
作者：
Hoff, Ulrich B. [1 ]
Harris, Glen I. [2 ]
Madsen, Lars S. [1 ]
Kerdoncuff, Hugo [1 ]
Lassen, Mikael [1 ]
Nielsen, Bo M. [1 ]
Bowen, Warwick P. [2 ]
Andersen, Ulrik L. [1 ]
机构：
[1] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark
[2] Univ Queensland, Ctr Excellence Engn Quantum Syst, St Lucia, Qld 4072, Australia
来源：
OPTICS LETTERS | 2013年 / 38卷 / 09期
基金：
澳大利亚研究理事会;
关键词：
RADIATION; LIMIT; OSCILLATOR; NOISE;
D O I：
10.1364/OL.38.001413
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on a hitherto unexplored application of squeezed light: for quantum-enhancement of mechanical transduction sensitivity in microcavity optomechanics. Using a toroidal silica microcavity, we experimentally demonstrate measurement of the transduced phase modulation signal in the frequency range 4-5.8 MHz with a sensitivity -0.72(+/- 0.01) dB below the shot noise level. This is achieved for resonant probing in the highly undercoupled regime, by preparing the probe in a weak coherent state with phase squeezed vacuum states at sideband frequencies. (C) 2013 Optical Society of America
引用
收藏
页码：1413 / 1415
页数：3
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