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Quadrature entanglement and photon-number correlations accompanied by phase-locking

H. H. Adamyan·N. H. Adamyan·S. B. Manvelyan·G. Yu. Kryuchkyan
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Abstract

We investigate quantum properties of phase-locked light beams generated in a nondegenerate optical parametric oscillator (NOPO) with an intracavity waveplate. This investigation continuous our previous analysis presented in Phys.Rev.A 69, 05814 (2004), and involves problems of continuous-variable quadrature entanglement in the spectral domain, photon-number correlations as well as the signatures of phase-locking in the Wigner function. We study the role of phase-localizing processes on the quantum correlation effects. The peculiarities of phase-locked NOPO in the self-pulsing instability operational regime are also cleared up. The results are obtained in both the P-representation as a quantum-mechanical calculation in the framework of stochastic equations of motion, and also by using numerical simulation based on the method of quantum state diffusion.

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H. H. Adamyan, N. H. Adamyan, S. B. Manvelyan, G. Yu. Kryuchkyan. 2005-12-28. Quadrature entanglement and photon-number correlations accompanied by phase-locking. https://doi.org/10.1103/physreva.73.033810

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