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Direct estimation of functionals of density operators by local operations and classical communication

Alves, C M and Horodecki, P and Oi, D K L and Kwek, L C and Ekert, A K (2003) Direct estimation of functionals of density operators by local operations and classical communication. Physical Review A, 68 (3). -. ISSN 1050-2947

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Abstract

We present a method of direct estimation of important properties of a shared bipartite quantum state, within the "distant laboratories" paradigm, using only local operations and classical communication. We apply this procedure to spectrum estimation of shared states, and locally implementable structural physical approximations to incompletely positive maps. This procedure can also be applied to the estimation of channel capacity and measures of entanglement.

Item type: Article
ID code: 35338
Keywords: entanglement, density operators , channel capacity , quantum state, Optics. Light, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Depositing user: Pure Administrator
Date Deposited: 03 Nov 2011 13:34
Last modified: 15 Apr 2015 08:37
Related URLs:
URI: http://strathprints.strath.ac.uk/id/eprint/35338

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