Quantum-enhanced micromechanical displacement sensitivity

被引：64

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

页码：1413 / 1415

页数：3

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