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Entangled light in transition through the generation threshold

G. Yu. Kryuchkyan·L. A. Manukyan
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Abstract

We investigate continuous variable entangling resources on the base of two-mode squeezing for all operational regimes of a nondegenerate optical parametric oscillator with allowance for quantum noise of arbitrary level. The results for the quadrature variances of a pair of generated modes are obtained by using the exact steady-state solution of Fokker-Planck equation for the complex P-quasiprobability distribution function. We find a simple expression for the squeezed variances in the near-threshold range and conclude that the maximal two-mode squeezing reaches 50% relative to the level of vacuum fluctuations and is achieved at the pump field intensity close to the generation threshold. The distinction between the degree of two-mode squeezing for monostable and bistable operational regimes is cleared up.

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G. Yu. Kryuchkyan, L. A. Manukyan. 2003-11-14. Entangled light in transition through the generation threshold. https://doi.org/10.1103/physreva.69.013813

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