Calculating a maximizer for Quantum mutual information

Dorlas, T. C. and Morgan, Ciara (2008) Calculating a maximizer for Quantum mutual information. (Preprint)

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Abstract

We obtain a maximizer for the quantum mutual information for classical information sent over the quantum amplitude damping channel. This is achieved by limiting the ensemble of input states to antipodal states, in the calculation of the product state capacity for the channel. We also consider the product state capacity of a convex combination of two memoryless channels and demonstrate in particular that it is in general not given by the minimum of the capacities of the respective memoryless channels.

Item Type: Article
Uncontrolled Keywords: product state capacity, maximizing ensemble, memoryless channels
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 19 Jun 2018 13:47
Last Modified: 14 Dec 2022 21:11
URI: https://dair.dias.ie/id/eprint/500

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