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Optimal cloning of coherent states with a linear amplifier and beam splitters

Braunstein, S.L., Cerf, N.J., Iblisdir, S., van Loock, P. and Massar, S. (2001) Optimal cloning of coherent states with a linear amplifier and beam splitters. Physical Review Letters, 86 (21). pp. 4938-4941. ISSN 0031-9007

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Abstract

A transformation achieving the optimal symmetric N→M cloning of coherent states is presented. Its implementation requires only a phase-insensitive linear amplifier and a network of beam splitters. An experimental demonstration of this continuous-variable cloner should therefore be in the scope of current technology. The link between optimal quantum cloning and optimal amplification of quantum states is also pointed out.

Item Type: Article
Academic Units: The University of York > Computer Science (York)
The University of York > Physics (York)
Depositing User: York RAE Import
Date Deposited: 24 Feb 2009 14:58
Last Modified: 24 Feb 2009 14:58
Published Version: http://dx.doi.org/10.1103/PhysRevLett.86.4938
Status: Published
Publisher: American Physical Society
Identification Number: 10.1103/PhysRevLett.86.4938
URI: http://eprints.whiterose.ac.uk/id/eprint/7238

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