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Science 19 March 2004:
Vol. 303. no. 5665, pp. 1784 - 1787
DOI: 10.1126/science.1092381
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Perspectives

COMPUTERS AND MATHEMATICS:
Quantum Channel Capacities

Charles H. Bennett and Peter W. Shor

Virtually all of today's information technology is based on the manipulation of classical bits. Quantum systems offer the potential of a much more powerful computing technology, however. In their Perspective, Bennett and Shor discuss an important aspect of quantum computing--the theoretical capacity of a quantum information channel. Although a number of concepts can be carried over from classical information theory, quantum systems have their own unusual properties. Recently, researchers have been able to show that these unique quantum aspects can provide much higher information flow than previously expected.

C. H. Bennett is at the T.J. Watson Research Center, IBM, Yorktown Heights, NY 10598, USA. P. W. Shor is in the Department of Mathematics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. E-mail: shor{at}math.mit.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Quantum Communication with Zero-Capacity Channels.
G. Smith and J. Yard (2008)
Science 321, 1812-1815
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