2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/90978Two schemes of amplification of two-mode squeezed light in the continuous variable EPR-state are considered. They are based on the integrals of motion, which allow conserving quantum correlations whereas the power of each mode may increase. One of these schemes involves a three-photon parametric process in a nonlinear transparent medium and second is a Raman type interaction of light with atomic ensemble.3 pages, revtex4, no figuresQuantum Physicstext