Directed percolation effects emerging from superadditivity of quantum networks

Details Directed percolation effects emerging from superadditivity of quantum networks Directed percolation effects emerging from superadditivity of quantum networks

2011-07-04

arxiv.org/abs/1107.0546v2

Physics

Quantum Physics

6 pages, 4 figures

Scientific paper

Entanglement indcued non--additivity of classical communication capacity in networks consisting of quantum channels is considered. Communication lattices consisiting 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 flavours: 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 byproduct, this sheds light on a new type of entanglement based quantum capacity percolation phenomenon.

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