RECONSTRUCTION OF EXTERNAL FORCES IN QUANTUM NOISES OF PARAMETRIC MEASURING SYSTEM WITH DISSIPATION

摘要

Reconstruction of external forces contaminated by the quantum noise of a dissipative parametric measuring system is considered. A quasioptimal filtration procedure is suggested and an error of force reconstruction is estimated. This filtration procedure becomes optimal for sufficiently small dissipation in the parametric measuring system. To realize such measurements one has to use a phase sensitive device and a dual homodyne detector with proper local oscillator phase.