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Applied Physics B

, Volume 64, Issue 2, pp 173–180 | Cite as

Quantum nondemolition measurement by optomechanical coupling

  • A. Heidmann
  • Y. Hadjar
  • M. Pinard

Abstract.

 We show that a single-port optical cavity with a movable mirror can provide a quantum non-demolition measurement of the intensity of a light beam. Due to radiation pressure, the cavity length is sensitive to the light intensity and can be measured with a secondary light beam. Signal-meter correlations can be made very large even at non-zero temperature. We study these correlations when the moving mirror is a plane–convex crystal resonator and we show the importance of spatial matching between light and acoustic modes.

PACS: 42.50.Lc 42.50.Vk 03.65.Bz 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • A. Heidmann
    • 1
  • Y. Hadjar
    • 1
  • M. Pinard
    • 1
  1. 1.Laboratoire Kastler Brossel, Université Pierre et Marie Curie et CNRS, Case 74, 4 lace Jussieu, F 75252 aris Cedex 05, France (Fax: +33-1/44 27-38 45, E-mail: heidmann@spectro.jussieu.fr)FR

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