Comparison of non classical effects: quantum phase fluctuation, antibunching and minimum total noise in various non linear optical processes

We study various non classical effects of light like reduction of quantum phase fluctuation, antibunching and minimum total noise present in various nonlinear optical processes. Further, we have shown that depth of non-classicality can be directly measured using all these parameters. We have done the comparative study to correlate these non-classical effects in seven wave mixing, eight wave mixing and third harmonic generation.