✦ LIBER ✦

Quantum noise limits on optical monitoring with parametric devices

✍ Scribed by C.J. McKinstrie; S. Radic; R.M. Jopson; A.R. Chraplyvy

Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 283 KB
Volume: 259
Category: Article
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2005.08.036

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✦ Synopsis

The limits imposed by quantum noise on optical monitoring with parametric devices are described quantitatively, for adjacent (backto-back) and distant (post-transmission) monitoring. Formulas are derived, which describe the effects of transmission on the photonnumber mean and variance of the signal, and which describe how the mean and variance of the output (monitored) signal and (generated) idler depend on the mean and variance of the input signal. It is possible to monitor many-photon signals without decreasing their signalto-noise ratios significantly.

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