Backaction-Evading Measurement of Mechanical Motion in the Optical Domain

Itay Shomroni, Liu Qiu, Tobias Kippenberg

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

When measuring the position of a mechanical oscillator, quantum mechanics imposes a strict limit on the attainable precision: Any reduction of imprecision leads to increased quantum backaction of the measuring probe on the oscillator. This quantum limit can be circumvented, in principle allowing to indefinitely reduce imprecision, by monitoring only a single quadrature of the oscillator. Such backaction-evading measurement has been recently demonstrated in electromechanical oscillators coupled to microwave resonant circuits. Here we demonstrate this technique in a photonic crystal nanomechanical oscillator, cryogenically and optomechanically cooled to a few quanta.

Original languageAmerican English
Title of host publicationInternational Conference on Optical MEMS and Nanophotonics, OMN 2018 - Proceedings
PublisherIEEE Computer Society
ISBN (Print)9781509063727
DOIs
StatePublished - 4 Sep 2018
Externally publishedYes
Event23rd International Conference on Optical MEMS and Nanophotonics, OMN 2018 - Lausanne, Switzerland
Duration: 29 Jul 20182 Aug 2018

Publication series

NameInternational Conference on Optical MEMS and Nanophotonics
Volume2018-July
ISSN (Print)2160-5033
ISSN (Electronic)2160-5041

Conference

Conference23rd International Conference on Optical MEMS and Nanophotonics, OMN 2018
Country/TerritorySwitzerland
CityLausanne
Period29/07/182/08/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Keywords

  • backaction evasion
  • nanomechanics
  • optomechanics

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