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On estimating the output entropy of a tensor product of the quantum phase-damping channel with an arbitrary channel

by: Grigori Amosov
(14 Jan 2013)  Key: citeulike:11895303

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Abstract

We obtained the estimation from below for the output entropy of a tensor product of the quantum phase-damping channel with an arbitrary channel. It is shown that from this estimation immediately follows that the strong superadditivity of the output entropy holds for this channel as well as for the quantum depolarizing channel.


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