Low Noise Amplification of a Continuous Variable Quantum State

Published

June 29, 2009

Author(s)

Raphael C. Pooser, Alberto M. Marino, Vincent Boyer, Kevin M. Jones, Paul D. Lett

Abstract

We present an experimental realization of a low-noise, universal, phase-insensitive optical amplifier using 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.

Citation

Physical Review Letters

Volume

103

Issue

1

Pub Type

Journals

Keywords

entanglement, entanglement cloning, phase-insensitive amplification, quantum cloning, squeezed light

Citation

Pooser, R. , Marino, A. , Boyer, V. , Jones, K. and Lett, P. (2009), Low Noise Amplification of a Continuous Variable Quantum State, Physical Review Letters (Accessed June 2, 2023)