Alexey E. Rastegin
Published 2008-10-01, updated 2009-02-18Version 2
The principal aim of this Comment is to correct those entropic uncertainty relations that are presented in a paper by Massar [arXiv:quant-ph/0703036v2 (current version)], concerning two approaches to a study of the noise produced by POVM's. It is next emphasized that the first of the entropic bounds for POVM obtained by the above author has been already presented in Ref. [8]. Some exposition obscurity with equation (14) of the commented paper is elucidated. Finally, some more specific remarks on the paper content are given.
Comments: 2 pages, no figures. Minor grammatical changes. More explanations are given
Multipartite steering inequalities based on entropic uncertainty relations
Conditions for the existence of positive operator valued measures
Geometric approach to extend Landau-Pollak uncertainty relations for positive operator-valued measures
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