Physics – Quantum Physics
Scientific paper
2009-07-22
Phys. Rev. A 81, 033846 (2010) [9 pages]
Physics
Quantum Physics
10 pages, new figure added
Scientific paper
10.1103/PhysRevA.81.033846
Quantum states with non-Gaussian statistics generated by optical parametric oscillators (OPO) with fluctuating parameters are studied by means of the Kurtosis excess of the external field quadratures. The field generated is viewed as the response of a nonlinear device to the fluctuations of laser pump amplitude and frequency, crystal temperature and cavity detuning, in addition to quantum noise sources. The Kurtosis excess has been evaluated perturbatively up to the third order in the strength of the crystal nonlinear coupling factor and the second order in the classical fluctuating parameters. Applied to the device described in Opt. Expr. 13, 948-956 (2005) the model has given values of the Kurtosi excess in good agreement with the measured ones.
Anwar Javaid
D'Auria Virginia
Lisio Corrado de
Paris Matteo G. A.
Porzio Alberto
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