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Directed percolation effects emerging from superadditivity of quantum networks

Abstract

Entanglement-induced nonadditivity of classical communication capacity in networks consisting of quantum channels is considered. Communication lattices consisting of butterfly-type entanglement-breaking channels augmented, with some probability, by identity channels are analyzed. The capacity superadditivity in the network is manifested in directed correlated bond percolation which we consider in two flavors: simply directed and randomly oriented. The obtained percolation properties show that high-capacity information transfer sets in much faster in the regime of superadditive communication capacity than otherwise possible. As a by-product, this sheds light on a type of entanglement-based quantum capacity percolation phenomenon.

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Copyright (2012 American Physical Society)

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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
PHYSICAL REVIEW A no. 85, pages 0 - 5,
ISSN: 2469-9926
Language:
English
Publication year:
2012
Bibliographic description:
Czekaj Ł., Chhajlany R., Horodecki P.: Directed percolation effects emerging from superadditivity of quantum networks// PHYSICAL REVIEW A. -Vol. 85, nr. iss. 3 (2012), s.0-5
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Gdańsk University of Technology

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