Additivity for transpose depolarizing channels

Additivity of the minimal output entropy for the family of transpose depolarizing channels introduced by Fannes et al. [quant-ph/0410195] is considered. It is shown that using the method of our previous paper [quant-ph/0403072] allows us to prove the additivity for the range of the parameter values...

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Bibliographic Details
Published in:arXiv.org 2004-12
Main Authors: Datta, Nilanjana, Holevo, Alexander S, Suhov, Yuri
Format: Article
Language:English
Subjects:
Channels
Depolarization
Online Access:Get full text
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Summary:Additivity of the minimal output entropy for the family of transpose depolarizing channels introduced by Fannes et al. [quant-ph/0410195] is considered. It is shown that using the method of our previous paper [quant-ph/0403072] allows us to prove the additivity for the range of the parameter values for which the problem was left open in [quant-ph/0410195]. Together with the result of [quant-ph/0410195], this covers the whole family of transpose depolarizing channels.
ISSN:2331-8422