title: Locally accessible information: how much can the parties gain by cooperating?
abstract: We investigate measurements of bipartite ensembles restricted to local operations and classical communication and find a universal Holevo-like upper bound on the locally accessible information. We analyze our bound and exhibit a class of states which saturate it. Finally, we link the bound to the problem of quantification of the nonlocality of the operations necessary to extract locally inaccessible information.
authors.affiliation: Department of Mathematics and Physics, Mälardalens Högskola, S-721 23 Västerås, Sweden.
authors.forename: Piotr
authors.initials: P
authors.lastname: Badziag
authors.forename: Michał
authors.initials: M
authors.lastname: Horodecki
authors.forename: Aditi
authors.initials: A
authors.lastname: Sen De
authors.forename: Ujjwal
authors.initials: U
authors.lastname: Sen