Degradable channels, less noisy channels, and quantum statistical morphisms: An equivalence relation
Degradable channels, less noisy channels, and quantum statistical morphisms: An equivalence relation
复制标题
DOI：
10.1134/s0032946016030017
复制
发表时间：
2016-07-01
影响因子：
1.2
通讯作者：
Buscemi, F.
中科院分区：
文献类型：
--
作者：
Buscemi, F.
根据最近关于量子信道统计比较的结果，重新考虑了通信信道中的两种偏序，即“可降级到”和“比没有更少的噪声”。虽然我们的分析同时涵盖了经典和量子信道，但我们也提供了对经典噪声信道的单独处理，并展示了在这种情况下如何构造另一种自包含证明，相对于一般结果具有其独特的优点。
Two partial orderings among communication channels, namely "being degradable into" and "being less noisy than," are reconsidered in the light of recent results about statistical comparisons of quantum channels. Though our analysis covers at once both classical and quantum channels, we also provide a separate treatment of classical noisy channels and show how in this case an alternative self-contained proof can be constructed, with its own particular merits with respect to the general result.