Non-Gaussian states produced by close-to-threshold optical parametric oscillators: Role of classical and quantum fluctuations
- Laboratoire Kastler Brossel, Universite Pierre et Marie Curie, Ecole Normale Superieure, Centre National de la Recherche Scientifique, 4 place Jussieu, F-75252 Paris (France)
- CNR-SPIN, Monte Sant'Angelo, via Cintia, I-80126 Naples (Italy)
- Dipartimento di Scienze Fisiche, Universita 'Federico II', Monte Sant'Angelo, via Cintia, I-80126 Naples (Italy)
- Department of Physics, COMSATS Institute of Information Technology, Islamabad (Pakistan)
- Dipartimento di Fisica, Universita degli studi di Milano, I-10133 Milan (Italy)
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 pump laser 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 (2005), the model has given values of the kurtosis excess in good agreement with the measured ones.
- OSTI ID:
- 21408526
- Journal Information:
- Physical Review. A, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevA.81.033846; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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