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OALib Journal期刊
ISSN: 2333-9721
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Forcible-Measurement Attack on Quantum Secure Direct Communication Protocol with Cluster State

Keywords: 03,67,Hk,03,65,Ud

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Abstract:

The security of the quantum secure direct communication (QSDC) protocol with cluster state is analysed. It is shown that the secret would be partially leaked out when an eavesdropper performs forcible measurements on the transmitted particles. With the help of the result in minimum error discrimination, an upper bound (i.e. 40%) of this leakage is obtained. Moreover, the particular measurements which makes the leakage reach this bound are given.

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