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Quantitative analysis reveals phase and intensity correlations in quantum optics, suggesting nonclassical phenomena.
The squeezing spectrum for nondegenerate parametric oscillation above threshold is calculated, including phase diffusion. A nonclassical correlation in phase and intensity occurs which is an example of the Einstein-Podolsky-Rosen paradox, even in fields of large photon number.
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Reid et al. (1988) studied this question.
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