Nonadditivity of quantum and classical capacities for entanglement breaking multiple-access channels and the butterfly network

Paweł Horodecki; Andrzej Grudka

Nonadditivity of quantum and classical capacities for entanglement breaking multiple-access channels and the butterfly network

Abstract

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.

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License: Copyright (2010 The American Physical Society)

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: PHYSICAL REVIEW A no. 81, pages 603051 - 5,
ISSN: 2469-9926
Language:: English
Publication year:: 2010
Bibliographic description:: Horodecki P., Grudka A.: Nonadditivity of quantum and classical capacities for entanglement breaking multiple-access channels and the butterfly network// PHYSICAL REVIEW A. -Vol. 81, nr. Iss. 6 (2010), s.603051-5
Verified by:: Gdańsk University of Technology