Generation of two-mode squeezed states by nondegenerate optical parametric process

摘要

The full quantum treatment on the three-mode interaction in an optical parametric oscillator (OPO) is presented. The simultaneous resonance of three nondegenerate modes in the OPO cavity has been experimentally demonstrated. Reductions in photocurrent noise of 30% relative to the vacuum noise level are obtained for frequency offsets near 2 MHz.