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 Quantum secure direct communication with pure entangled states


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We present a quantum secure direct communication protocol where the channels are not maximally entangled states. The communication parties utilize decoy photons to check eavesdropping. After ensuring the security of the quantum channel, the sender encodes the secret message and transmits it to the receiver by using Controlled-NOT operation and von Neumann measurement. The protocol is simple and realizable with present technology. We also show the protocol is secure for noisy quantum channel.



Autor: Jian Wang; Quan Zhang; Chao-jing Tang

Fuente: https://archive.org/







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