The European Physical Journal D

, Volume 8, Issue 1, pp 101–110 | Cite as

Quantum theory of fluctuations in a cold damped accelerometer

  • F. GrassiaEmail author
  • J. -M. Courty
  • S. Reynaud
  • P. Touboul


We present a quantum network approach to real high sensitivity measurements. Thermal and quantum fluctuations due to active as well as passive elements are taken into account. The method is applied to the analysis of the capacitive accelerometer using the cold damping technique, developed for fundamental physics in space by ONERA and the ultimate limits of this instrument are discussed. It is confirmed in this quantum analysis that the cold damping technique allows one to control efficiently the test mass motion without degrading the noise level.


42.50.Lc Quantum fluctuations, quantum noise, and quantum jumps 04.80.Cc Experimental tests of gravitational theories 07.50.-e Electrical and electronic components, instruments, and techniques 


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Copyright information

© Società Italiana di Fisica Springer-Verlag 2000

Authors and Affiliations

  • F. Grassia
    • 1
    Email author
  • J. -M. Courty
    • 1
  • S. Reynaud
    • 1
  • P. Touboul
    • 2
  1. 1.Laboratoire Kastler BrosseleParis Cedex 05France
  2. 2.Département de Mesures PhysiquesONERAChatillon CedexFrance

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