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). -. 032306. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.68.032306)

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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.

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• Item metadata

  Item type:	Article
  ID code:	35338
  Dates:	Date Event September 2003 Published
  Subjects:	Science > Physics > Optics. Light
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	03 Nov 2011 13:34
  Last modified:	09 Apr 2024 08:12
  Related URLs:	Journal or Publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/35338