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Quantum Secure Direct Communication Based on Authentication |
| WANG Min-Jie, PAN Wei |
| Department of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031 |
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| Cite this article: |
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WANG Min-Jie, PAN Wei 2008 Chin. Phys. Lett. 25 3860-3863 |
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Abstract We propose two schemes of quantum secure direct communication (QSDC) combined ideas of user authentication [Phys. Rev. A 73(2006)042305] and direct communication with dense coding [Phys. Rev. A. 68(2003)042317]. In these protocols, the privacy of authentication keys and the properties of the EPR pairs not only ensure the realization of identity authentication but also further improve the security of communication, and no secret messages are leaked even if the messages were broken.
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| Keywords:
03.67.Hk
03.67.Dd
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Received: 18 July 2008
Published: 25 October 2008
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| PACS: |
03.67.Hk
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(Quantum communication)
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03.67.Dd
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(Quantum cryptography and communication security)
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