Physics – Quantum Physics
Scientific paper
2003-12-16
Phys.Rev.A 69,044301(2004)
Physics
Quantum Physics
16 pages, 6 figures. submitted to Physical Review A
Scientific paper
10.1103/PhysRevA.69.044301
Quantum fluctuation and quantum entanglement of the pump field reflected from an optical cavity for type II second harmonic generation are theoretically analyzed. The correlation spectra between the quadratures of the reflected subharmonic fields are interpreted in terms of pump parameter, intracavity losses and normalized frequency. Large correlation degrees of both amplitude and phase quadratures can be accessed in a triple resonant cavity before the pitchfork bifurcation occurs. The two reflected subharmonic fields are in an entangled state with the quantum correlation of phase quadratures and anticorrelation of amplitude quadratures. The proposed system can be exploited to be a new source generating entangled states of continuous variables.
Gao Jiangrui
Li Yongming
Zhai Zehui
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