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Multipartite purification protocols: upper and optimal bounds

Abstract

A method for producing an upper bound for all multipartite purification protocols is devised, based on knowing the optimal protocol for purifying bipartite states. When applied to a range of noise models, both local and correlated, the optimality of certain protocols can be demonstrated for a variety of graph and valence bond states.Comment: 15 pages, 16 figures. v3: published versio

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    Last time updated on 01/04/2019