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arXiv 1202.1126quant-ph
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Bosonic窃听信道的私有容量界限

Private-Capacity Bounds for Bosonic Wiretap Channels

Ligong Wang, Jeffrey H. Shapiro, Nivedita Chandrasekaran, Gregory W. Wornell

摘要:

我们证明了一个上界的单模无噪声玻色子窃听信道的私人容量。结合先前的下界,我们得到了私人容量的低光子数渐近表达式。然后,我们表明,多模无噪声玻色子窃听信道是等效的并行单模信道,因此可以应用的单模界限。最后,我们考虑多空间模式通过大气湍流的传播,并推导出一个私人容量的下界,只需要二阶矩的信道矩阵。

英文摘要:

We prove an upper bound on the private capacity of the single-mode noiseless bosonic wiretap channel. Combined with a previous lower bound, we obtain the low photon-number asymptotic expression for the private capacity. We then show that the multiple-mode noiseless bosonic wiretap channel is equivalent to parallel single-mode channels, hence the single-mode bounds can be applied. Finally, we consider multiple-spatial-mode propagation through atmospheric turbulence, and derive a private-capacity lower bound that only requires second moments of the channel matrix.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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