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arXiv 2102.07394math-phmath.MPmath.QA
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$O_N^+$ -Temperley-Lieb量子信道的渐近分析

Asymptotic analysis for $O_N^+$-Temperley-Lieb quantum channels

Sang-Gyun Youn

摘要:

本文研究了一类自由正交量子群$O_N^+$的对称性协变的量子信道。这些量子信道被称为$O_N^+$ -Temperley-Lieb信道,[BCLY 20]中分析了它们的信息论性质,如Holevo信息和相干信息,但它们的可加性问题仍然是开放的。本文的主要结果是将$O_N^+$ -Lieb量子信道用更简单的Bures距离近似。作为应用,我们研究了$O_N^+$ -Lieb量子信道的强可加性问题,以及它们的经典容量、私有经典容量和渐近态下的量子容量$N\rightarrow \infty$ .

英文摘要:

In this paper, we focus on a class of quantum channels which are covariant for symmetries from free orthogonal quantum groups $O_N^+$. These quantum channels are called $O_N^+$-Temperley-Lieb channels, and their information-theoretic properties such as Holevo information and coherent information were analyzed in [BCLY20], but their additivity questions remained open. The main result of this paper is to approximate $O_N^+$-Temperley-Lieb quantum channels by much simpler ones in terms Bures distance. As applications, we study strong additivity questions for $O_N^+$-Temperley-Lieb quantum channels, and their classical capacity, private classical capacity and quantum capacity in the asymptotic regime $N\rightarrow \infty$.

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