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arXiv 0802.4193quant-ph
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对"随机化量子态:构造与应用“一文的评论

A remark on the paper ``Randomizing quantum states: Constructions and applications''

Guillaume Aubrun

摘要:

$\e$ -随机化量子信道的概念已经由Hayden、Leung、Shor和Winter结合近似加密量子态引入。他们使用离散化论证证明,大致$d \log d$随机酉算子的集合提供了$\C^d$上的此类信道的示例。我们表明,一个简单的技巧,提高了效率的论点,并减少了酉算子的数量约$d$。

英文摘要:

The concept of $\e$-randomizing quantum channels has been introduced by Hayden, Leung, Shor and Winter in connection with approximately encrypting quantum states. They proved using a discretization argument that sets of roughly $d \log d$ random unitary operators provide examples of such channels on $\C^d$. We show that a simple trick improves the efficiency of the argument and reduces the number of unitary operators to roughly $d$.

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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