Coherent eavesdropping strategies for the four state quantum cryptography protocol

Coherent eavesdropping strategies for the four state quantum cryptography protocol An elementary derivation of best eavesdropping strategies for the four state BB84 quantum cryptography protocol is presented, for both incoherent and two-qubit coherent attacks. While coherent attacks do not help Eve to obtain more information, they are more powerful to reveal the whole message sent by Alice. Our results are based on symmetric eavesdropping strategies, which we show to be sufficient to analyze these kind of problems. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physics Letters A Elsevier

Coherent eavesdropping strategies for the four state quantum cryptography protocol

Physics Letters A, Volume 229 (1) – Apr 28, 1997

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Publisher
Elsevier
Copyright
Copyright © 1997 Elsevier Ltd
ISSN
0375-9601
D.O.I.
10.1016/S0375-9601(97)00176-X
Publisher site
See Article on Publisher Site

Abstract

An elementary derivation of best eavesdropping strategies for the four state BB84 quantum cryptography protocol is presented, for both incoherent and two-qubit coherent attacks. While coherent attacks do not help Eve to obtain more information, they are more powerful to reveal the whole message sent by Alice. Our results are based on symmetric eavesdropping strategies, which we show to be sufficient to analyze these kind of problems.

Journal

Physics Letters AElsevier

Published: Apr 28, 1997

References

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