Multipartite purification protocols: upper and optimal bounds
arXiv:quant-ph/0608080 · doi:10.1103/PhysRevA.75.062307
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.
15 pages, 16 figures. v3: published version