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arXiv · 1011.5766

Two Color Entanglement

Aiko Samblowski·Christina E. Laukötter·Nicolai Grosse·Ping Koy Lam·Roman Schnabel
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Abstract

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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Aiko Samblowski, Christina E. Laukötter, Nicolai Grosse, Ping Koy Lam, Roman Schnabel. 2010-11-30. Two Color Entanglement. https://doi.org/10.1063/1.3630183

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