中国物理B ›› 2010, Vol. 19 ›› Issue (11): 110306-110311.doi: 10.1088/1674-1056/19/11/110306
杨静1, 张茹1, 王川2
收稿日期:
2010-04-13
修回日期:
2010-05-11
出版日期:
2010-11-15
发布日期:
2010-11-15
基金资助:
Yang Jing(杨静)a), Wang Chuan(王川)a)b)†ger, and Zhang Ru(张茹)a)
Received:
2010-04-13
Revised:
2010-05-11
Online:
2010-11-15
Published:
2010-11-15
Supported by:
摘要: An improved quantum secure direct communication (QSDC) protocol is proposed in this paper. Blocks of entangled photon pairs are transmitted in two steps in which secret messages are transmitted directly. The single logical qubits and unitary operations under decoherence free subspaces are presented and the generalized Bell states are constructed which are immune to the collective noise. Two steps of qubit transmission are used in this protocol to guarantee the security of communication. The security of the protocol against various attacks are discussed.
中图分类号: (Entanglement and quantum nonlocality)
杨静, 王川, 张茹. Faithful quantum secure direct communication protocol against collective noise[J]. 中国物理B, 2010, 19(11): 110306-110311.
Yang Jing(杨静), Wang Chuan(王川), and Zhang Ru(张茹). Faithful quantum secure direct communication protocol against collective noise[J]. Chin. Phys. B, 2010, 19(11): 110306-110311.
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