Communication of spin directions with products states and finite measurements

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Abstract

A study was made to determine whether there is a quadratic improvement in the rate the maximal average fidelity (MAF) approaches to one. It was shown that the optimal product states are those with the smallest |m|. As a result, the implicit assumption that the truly optimal states are entangled for N>2 was proved.
Original languageEnglish
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume64
Issue number2
DOIs
Publication statusPublished - 1 Aug 2001

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