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Quantum key distribution: how do we know it's secure?

Norbert Lütkenhaus

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Abstract

Quantum key distribution - the creation of secret keys from quantum mechanical correlations - is an example of how physical methods can be used to solve problems in classical information theory. The author describes the basic principles that can be used to confirm the security of the quantum key distribution systems now being marketed to banks, governments and network service providers.

© 2004 Optical Society of America

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