SQUEEZING PROPERTIES OF THE RADIATION FIELD IN THE INTERACTION OF SQUEEZED VACUUM WITH TWO TWO-LEVEL ATOMS THROUGH TWO-PHOTON TRANSITION

We study the squeezing and the amplitude-squared squeezing of radiation field in the interaction of squeezed vacuum state with two two-level atoms, and discuss the effects of the relative value of two atom-field coupling constants on them. The numerical results show that the presence of one additional atom introduces noatrivival cooperative effects into the squeezing and the amplitude-squared squeezing of radiation field.