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Complementarity and additivity for depolarizing channels

Nilanjana Datta·Alexander S. Holevo
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Abstract

In this paper we use the method of a recent paper (quant-ph/0509101) to compute complementary channels for certain important cases, such as depolarizing and transpose-depolarizing channels. This method allows us to easily obtain the minimal Kraus representations from non--minimal ones. We also study the properties of the output purity of the tensor product of a channel and its complement.

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Nilanjana Datta, Alexander S. Holevo. 2005-10-18. Complementarity and additivity for depolarizing channels. https://arxiv.org/abs/quant-ph/0510145

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