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Security of quantum key distribution using two-mode squeezed states against optimal beam splitter attack 下载免费PDF全文
For the beam splitter attack strategy against quantum key distribution using two-mode squeezed states, the analytical expression of the optimal beam splitter parameter is provided in this paper by applying the Shannon information theory. The theoretical secret information rate after error correction and privacy amplification is given in terms of the squeezed parameter and channel parameters. The results show that the two-mode squeezed state quantum key distribution is secure against an optimal beam splitter attack. 相似文献
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研究了相对论效应引起的场量的非线性对谐波辐射源的影响;在入射光为长脉冲激光并计及各阶谐波间的耦合时,解析研究了三次谐波的振幅、频率、相位的变化及增长与饱和特性并计算了转化率,结果表明谐波间的耦合使幅值和转化率减少。 相似文献
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A quantum secret sharing scheme is proposed by making use of quantum registers. In the proposed scheme, secret message state is encoded into multipartite entangled states. Several identical multi-particle entanglement states are generated and each particle of the entanglement state is filled in different quantum registers which act as shares of the secret message. Two modes, i.e. the detecting mode and the message mode, are employed so that the eavesdropping can be detected easily and the secret message may be recovered. The security analysis shows that the proposed scheme is secure against eavesdropping of eavesdropper and cheating of participants. 相似文献
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A quantum identification scheme including registration and identification phases is proposed. The users‘ passwords are transmitted by qubit string and recorded as a set of quantum operators. The security of the proposed scheme is guaranteed by the no-cloning theorem. Based on photon polarization modulation, an experimental approach is also designed to implement our proposed scheme. 相似文献
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1.前言
解放初期地方国营郴县三合煤矿经办的茶山岭矿井,1955年由湖南省重工业厅接办后改为街洞煤矿,相继建有茶山岭、塘角上、岔路口三对探采井。1962年开始将茶山岭井改建为年产10万t的正规矿井,1966年移交生产。矿井设计生产能力10万t/a,2005年核定生产能力15万t/a。 相似文献