Experimental Demonstration of Quantum Entanglement Between Frequency-Nondegenerate Optical Twin Beams

Details Experimental Demonstration of Quantum Entanglement Between Frequency-Nondegenerate Optical Twin Beams Experimental Demonstration of Quantum Entanglement Between Frequency-Nondegenerate Optical Twin Beams

2005-12-13

arxiv.org/abs/quant-ph/0512093v2

Opt. Lett. 31, 1133(2006)

Physics

Quantum Physics

Accepted in Opt. Lett

Scientific paper

10.1364/OL.31.001133

The quantum entanglement of amplitude and phase quadratures between two intense optical beams with the total intensity of 22mW and the frequency difference of 1nm, which are produced from an optical parametric oscillator operating above threshold, is experimentally demonstrated with two sets of unbalanced Mach-Zehnder interferometers. The measured quantum correlations of intensity and phase are in reasonable agreement with the results calculated based on a semi-classical analysis of the noise characteristics given by C. Fabre et al.

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