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arXiv · 0906.5024

Low-Noise Amplification of a Continuous Variable Quantum State

R. C. Pooser·A. M. Marino·V. Boyer·K. M. Jones·P. D. Lett
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Abstract

We present an experimental realization of a low-noise, phase-insensitive optical amplifier using a four-wave mixing interaction in hot Rb vapor. Performance near the quantum limit for a range of amplifier gains, including near unity, can be achieved. Such low-noise amplifiers are essential for so-called quantum cloning machines and are useful in quantum information protocols. We demonstrate that amplification and ``cloning'' of one half of a two-mode squeezed state is possible while preserving entanglement.

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R. C. Pooser, A. M. Marino, V. Boyer, K. M. Jones, P. D. Lett. 2009-06-27. Low-Noise Amplification of a Continuous Variable Quantum State. https://doi.org/10.1117/12.851881

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