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Rev. Mod. Phys. 77, 513–577 (2005)

Quantum information with continuous variables

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Samuel L. Braunstein
Computer Science, University of York, York YO10 5DD, United Kingdom

Peter van Loock
National Institute of Informatics (NII), Tokyo 101-8430, Japan and Institute of Theoretical Physics, Institute of Optics, Information and Photonics (Max-Planck Forschungsgruppe), Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany

Published 29 June 2005

Quantum information is a rapidly advancing area of interdisciplinary research. It may lead to real-world applications for communication and computation unavailable without the exploitation of quantum properties such as nonorthogonality or entanglement. This article reviews the progress in quantum information based on continuous quantum variables, with emphasis on quantum optical implementations in terms of the quadrature amplitudes of the electromagnetic field.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/RevModPhys.77.513
DOI:
10.1103/RevModPhys.77.513
PACS:
0367Mn, 0365Ud, 0367Lx, 0367Hk, 4250-p