Two Color Entanglement

Details Two Color Entanglement Two Color Entanglement

2010-11-26

arxiv.org/abs/1011.5766v2

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

We report on the generation of entangled states of light between the wavelengths 810 and 1550 nm in the continuous variable regime. The fields were produced by type I optical parametric oscillation in a standing-wave cavity build around a periodically poled potassium titanyl phosphate crystal, operated above threshold. Balanced homodyne detection was used to detect the non-classical noise properties, while filter cavities provided the local oscillators by separating carrier fields from the entangled sidebands. We were able to obtain an inseparability of I=0.82, corresponding to about -0.86 dB of non-classical quadrature correlation.

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