A refined Analysis of Squeezing Amplification in the OneMode Subharmonic Generation

Abstract

Wehave analyzed the statistical and squeezing properties of the signalmode applying thesolution of c-number Langivin equations for the combination of the twin signal light beams.We have found that the mean photon number to be twofold of that of a twin signal light beam.And a large part of the mean photon number is confined in a relatively small frequency interval. In addition, we have shown that the local quadrature squeezing of the signal mode is in general greater than the global quadrature squeezing and approaches to the global quadrature squeezing as increases . Moreover, the onemode subharmonic light beams have amaximum amplified squeezing of 75% below the vacuum state level and occurs in frequency interval.