Share Email Print
cover

Proceedings Paper

Low-noise amplification of a continuous-variable quantum state
Author(s): R. C. Pooser; A. M. Marino; V. Boyer; K. M. Jones; P. D. Lett
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper 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.

Paper Details

Date Published: 16 April 2010
PDF: 11 pages
Proc. SPIE 7702, Quantum Information and Computation VIII, 77020O (16 April 2010); doi: 10.1117/12.851881
Show Author Affiliations
R. C. Pooser, Oak Ridge National Lab. (United States)
A. M. Marino, Joint Quantum Institute, National Institute of Standards and Technology and Univ. of Maryland (United States)
V. Boyer, The Univ. of Birmingham (United Kingdom)
K. M. Jones, Williams College (United States)
P. D. Lett, Joint Quantum Institute, National Institute of Standards and Technology and Univ. of Maryland (United States)


Published in SPIE Proceedings Vol. 7702:
Quantum Information and Computation VIII
Eric J. Donkor; Andrew R. Pirich; Howard E. Brandt, Editor(s)

© SPIE. Terms of Use
Back to Top