Additivity for transpose depolarizing channels

Details Additivity for transpose depolarizing channels Additivity for transpose depolarizing channels

2004-12-05

arxiv.org/abs/quant-ph/0412034v1

Physics

Quantum Physics

9 pages

Scientific paper

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.

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