@inproceedings{3ee86ba285ec4b879219a587478ad6fd,
title = "Low-noise amplification of a continuous-variable quantum state",
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 networks and protocols. We demonstrate that amplification and {"}cloning{"} of one half of a two-mode squeezed state is possible while preserving entanglement. The inseparability criterion between the two original modes remains satisfied for small to large gains, while the EPR criterion is satisfied for a smaller range. This amplification of quantum correlations paves the way for optimal cloning of a bipartite entangled state.",
keywords = "Low-noise amplifier, Phase-insensitive amplification, Quantum cloning, Quantum entanglement",
author = "Pooser, {R. C.} and Marino, {A. M.} and V. Boyer and Jones, {K. M.} and Lett, {P. D.}",
year = "2010",
doi = "10.1117/12.851881",
language = "English",
isbn = "9780819481665",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Quantum Information and Computation VIII",
note = "Quantum Information and Computation VIII ; Conference date: 08-04-2010 Through 09-04-2010",
}