Sub-shot-noise measurements using the beat note between quantum-correlated photon beams
- 1 October 1990
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 7 (10) , 2132-2136
- https://doi.org/10.1364/josab.7.002132
Abstract
We propose a new method for optical measurements below the shot-noise limit. The method is based on detecting the beat note between the two quantum-correlated beams emitted by a nondegenerate optical parametric oscillator operating above threshold. Such a method can be used to enhance the sensitivity of light-scattering and polarization-rotation measurements.Keywords
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