Lectures on Quantum Optics and Quantum Information

Classical Correlations of Light Beams
A simple example : intensity « correlations » is easy to obtain….
Question : How to define the quantum character of
correlations between two beams in the CV regime?
Involving 1 quadrature
Gemellity
QND Correlation
Normalized linear correlation coefficient
For a very noisy incident beam, the
correlation goes to 1 !
Involving 2 quadratures
Inseparability
EPR Correlations