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arXiv:1012.1675 [math.FA]AbstractReferencesReviewsResources

Interpolation problems by completely positive maps

Chi-Kwong Li, Yiu-Tung Poon

Published 2010-12-08Version 1

Given commuting families of Hermitian matrices {A1, ..., Ak} and {B1, ...., Bk}, conditions for the existence of a completely positive map L, such that L(Aj) = Bj for j = 1, ...,k, are studied. Additional properties such as unital or / and trace preserving on the map ? are also considered. Connections of the study to dilation theory, matrix inequalities, unitary orbits, and quantum information science are mentioned.

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