Journal
OPTICS LETTERS
Volume 38, Issue 9, Pages 1413-1415Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.38.001413
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Funding
- Danish Council for Independent Research
- Lundbeck Foundation
- Australian Research Council Centre of Excellence [CE110001013, DP0987146]
- Lundbeck Foundation [R69-2011-8249] Funding Source: researchfish
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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
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