Faithful quantum secure direct communication protocol against collective noise
Faithful quantum secure direct communication protocol against collective noise
复制标题
针对集体噪声的忠实量子安全直接通信协议
DOI:
10.1088/1674-1056/19/11/110306
复制
发表时间:
2010-11
影响因子:
1.7
通讯作者:
Zhang Ru
中科院分区:
文献类型:
--
作者:
Yang Jing;Wang Chuan;Zhang Ru
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.
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