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Proceedings Paper

Optimal eavesdropping strategies in quantum cryptography using photonic quantum control
Author(s): Stephen D. Bartlett
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Paper Abstract

When eavesdropping on a quantum channel, two distinct properties of quantum physics arise. First, if the quantum system is prepared in one of several non-orthogonal states, then no measurement can discriminate these states with certainty. Second, any measurement that acquires information about a system must necessarily disturb it. We investigate a simple and optimal eavesdropping scheme that minimizes the disturbance caused by a given amount of information gain, and show that an in principle demonstration of such a scheme could be performed using existing experimental techniques in single-photon quantum technologies.

Paper Details

Date Published: 25 September 2007
PDF: 10 pages
Proc. SPIE 6710, Quantum Communications and Quantum Imaging V, 67100U (25 September 2007); doi: 10.1117/12.734764
Show Author Affiliations
Stephen D. Bartlett, Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 6710:
Quantum Communications and Quantum Imaging V
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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