Abstract
We compare the nonclassical states of light produced by a parametric oscillator for quantum noise of different strengths. Increasing noise strength brings a transition from a slightly perturbed classical state showing squeezing to a superposition of coherent states. We use the positive-P representation to illustrate the roles of quantum noise, quantum coherence, nonlinearity, and dissipation in this simple quantum dynamical system.
- Received 1 February 1988
DOI:https://doi.org/10.1103/PhysRevLett.60.1836
©1988 American Physical Society