Tc. Zhang et al., NONCLASSICAL PROPERTIES AND COMPARISON OF 2 SQUEEZINGS, Science in China. Series A, Mathematics, Physics, Astronomy & Technological Sciences, 37(2), 1994, pp. 227-236
The criteria for the existence of nonclassical effects of the signal a
nd coupled modes are obtained through the Fokker-Planck equation in th
e nondegenerate optical parametric oscillator (NOPO). For the first ti
me, the relation between the nonclassical depth and the intensity corr
elation and the comparison between the two-mode squeezing (TMS) and th
e intensity difference squeezing (IDS) haw been presented.