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题名: Two-step quantum direct communication protocol using the Einstein-Podolsky-Rosen pair block
作者: Deng, FG ;  Long, GL ;  Liu, XS
刊名: PHYSICAL REVIEW A
出版日期: 2003
卷号: 68, 期号:4, 页码:-
关键词: ERROR-CORRECTING CODES ;  KEY DISTRIBUTION ;  BELL THEOREM ;  CRYPTOGRAPHY ;  STATES ;  INFORMATION ;  PARTICLE ;  STORAGE ;  PHOTONS ;  SCHEME
学科分类: Physics
通讯作者: Deng, FG , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
部门归属: Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China; Key Lab Quantum Informat & Measurements, Beijing 100084, Peoples R China; Tsing Hua Univ, Ctr Atom & Mol NanoSci, Beijing 100084, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: A protocol for quantum secure direct communication using blocks of Einstein-Podolsky-Rosen (EPR) pairs is proposed. A set of ordered N EPR pairs is used as a data block for sending secret message directly. The ordered N EPR set is divided into two particle sequences, a checking sequence and a message-coding sequence. After transmitting the checking sequence, the two parties of communication check eavesdropping by measuring a fraction of particles randomly chosen, with random choice of two sets of measuring bases. After insuring the security of the quantum channel, the sender Alice encodes the secret message directly on the message-coding sequence and sends them to Bob. By combining the checking and message-coding sequences together, Bob is able to read out the encoded messages directly. The scheme is secure because an eavesdropper cannot get both sequences simultaneously. We also discuss issues in a noisy channel.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000187004700036
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13215
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Deng, FG,Long, GL,Liu, XS. Two-step quantum direct communication protocol using the Einstein-Podolsky-Rosen pair block[J]. PHYSICAL REVIEW A,2003,68(4):-.
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