Journal
PHYSICAL REVIEW A
Volume 78, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.78.064304
Keywords
cryptographic protocols; quantum cryptography; quantum entanglement
Categories
Funding
- NHTRDP [2006AA01Z419]
- NSFC [60873191, 60821001, 90604023]
- National Laboratory for Modern Communications Science Foundation of China [9140C1101010601]
- NSF of Beijing [4072020]
- Foundation of Fujian Education Bureau [JA08044]
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In this paper, a quantum secure direct communication protocol with chi-type entangled states parallel to chi(00)>(3214) is proposed. We analyze the security of this protocol and prove that it is secure in ideal conditions. Then, an alternative way is presented to ensure the security of this protocol in a noisy channel. Moreover, this protocol utilizes quantum superdense coding to achieve a high intrinsic efficiency and source capacity. The practical implementation of this protocol is also discussed.
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