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arXiv 0905.2313quant-phmath.OAmath.PR
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随机量子信道I:图形演算和Bell态现象

Random quantum channels I: graphical calculus and the Bell state phenomenon

Benoît Collins, Ion Nechita

摘要:

本文是我们从随机矩阵的观点研究量子信道的系列文章的第一篇。我们开发了一个图形化的工具,使我们能够计算一个随机的量子信道的输出的预期时刻。作为应用,我们研究了Hayden \cite{hayden}引入的随机矩阵模型的变化,并证明了它们的特征值几乎必然收敛.特别是,我们获得了一些模型的最大特征值的值急剧改善,这是在进一步的工作中所示的最小输出熵不等式有新的应用。

英文摘要:

This paper is the first of a series where we study quantum channels from the random matrix point of view. We develop a graphical tool that allows us to compute the expected moments of the output of a random quantum channel. As an application, we study variations of random matrix models introduced by Hayden \cite{hayden}, and show that their eigenvalues converge almost surely. In particular we obtain for some models sharp improvements on the value of the largest eigenvalue, and this is shown in a further work to have new applications to minimal output entropy inequalities.

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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