Locally accessible information: How much can the parties gain by cooperating?

Details Locally accessible information: How much can the parties gain by cooperating? Locally accessible information: How much can the parties gain by cooperating?

2003-04-04

arxiv.org/abs/quant-ph/0304040v3

Phys. Rev. Lett 91, 117901 (2003)

Physics

Quantum Physics

4 pages, no figures, RevTeX4; v2: a conjecture partially proven, results unchanged; v3: small changes in presentation, publish

Scientific paper

10.1103/PhysRevLett.91.117901

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 unaccessible information.

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