Quantum Secure Direct Communication with Two-Photon Four-Qubit Cluster States
International Journal of Theoretical Physics(2012)
摘要
In a quantum secure direct communication protocol, two remote parties can transmit the secret message directly without first generating a key to encrypt them. A quantum secure direct communication protocol using two-photon four-qubit cluster states is presented. The presented scheme can achieve a higher efficiency in transmission and source capacity compared with the proposed quantum secure direct communication protocols with cluster states, and the security of the protocol is also discussed.
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关键词
Quantum secure direct communication,Two-photon four-qubit cluster states,Quantum cryptography
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