Ultrasensitive measurement of MEMS cantilever displacement below the photon shot noise limit

R. C. Pooser; B. J. Lawrie

doi:10.1364/QIM.2014.QW1B.2

Research in Optical Sciences
OSA Technical Digest (online) (Optica Publishing Group, 2014),
paper QW1B.2
•https://doi.org/10.1364/QIM.2014.QW1B.2

Ultrasensitive measurement of MEMS cantilever displacement below the photon shot noise limit

R. C. Pooser and B. J. Lawrie

Quantum Information and Measurement 2014

Messe Berlin, Berlin Germany
18–20 March 2014
ISBN: 978-1-55752-995-4

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Optomechanics & Photonics I (QW1B)

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R. C. Pooser and B. J. Lawrie, "Ultrasensitive measurement of MEMS cantilever displacement below the photon shot noise limit," in Research in Optical Sciences , OSA Technical Digest (online) (Optica Publishing Group, 2014), paper QW1B.2.

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Abstract

Microcantilever displacement measurements below the backaction noise level are well established, but sensitivity below the shot-noise-limit has remained elusive. We demonstrate sub-shot-noise sensitivity in microcantilever sensing applications using simple differential measurements with multi-spatial-mode squeezed light.

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