Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-09-28
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
27 pages, 8 figures
Scientific paper
10.1088/0953-4075/41/3/035502
The dependence of quantum correlation of twin beams on the pump finesse of an optical parametric oscillator is studied with a semi-classical analysis. It is found that the phase-sum correlation of the output signal and idler beams from an optical parametric oscillator operating above threshold depends on the finesse of the pump field when the spurious pump phase noise generated inside the optical cavity and the excess noise of the input pump field are involved in the Langevin equations. The theoretical calculations can explain the previously experimental results, quantitatively.
Jia* Xiaojun
Peng Kunchi
Shang Yana
Wang Dong
Xie Changde
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