Optimal eavesdropping strategies in quantum cryptography using photonic quantum control

Stephen D. Bartlett

doi:10.1117/12.734764

25 September 2007 Optimal eavesdropping strategies in quantum cryptography using photonic quantum control

Stephen D. Bartlett

Proceedings Volume 6710, Quantum Communications and Quantum Imaging V; 67100U (2007) https://doi.org/10.1117/12.734764
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

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.

Citation Download Citation

Stephen D. Bartlett "Optimal eavesdropping strategies in quantum cryptography using photonic quantum control", Proc. SPIE 6710, Quantum Communications and Quantum Imaging V, 67100U (25 September 2007); https://doi.org/10.1117/12.734764

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