Nonadditivity of quantum and classical capacities for entanglement breaking multiple-access channels and the butterfly network
Nonadditivity of quantum and classical capacities for entanglement breaking multiple-access channels and the butterfly network
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DOI：
10.1103/physreva.81.060305
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发表时间：
2009-06
影响因子：
2.9
通讯作者：
A. Grudka;P. Horodecki
中科院分区：
文献类型：
--
作者：
A. Grudka;P. Horodecki
我们分析了纠缠破缺的量子网络基元。我们证明了量子多址信道和量子蝴蝶网络的量子容量域和经典容量域的超可加性。由于这些效应在高噪声下特别明显，他们认为量子信息效应在偶尔有高噪声率的网络中可能特别有帮助。目前的效应在两组分系统和多组分系统的超加性之间提供了定性的界限。
We analyze quantum network primitives which are entanglement breaking. We show superadditivity of quantum and classical capacity regions for quantum multiple-access channels and the quantum butterfly network. Since the effects are especially visible at high noise they suggest that quantum information effects may be particularly helpful in the case of the networks with occasional high noise rates. The present effects provide a qualitative borderline between superadditivities of bipartite and multipartite systems.