Evaluation of non-unital qubit channel capacities

S.N. Filippov

Institute of Physics and Technology, Russian Academy of Sciences, Moscow, 117218 Russia

Moscow Institute of Physics and Technology, Dolgoprudny, 141701 Russia

E-mail: sergey.filippov@phystech.edu

Received October 23, 2017

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Abstract

We have applied quantum Sinkhorn's theorem to non-unital qubit channels and derived lower and upper bounds on the classical capacity of such channels.

Keywords: qubit channel, non-unital channel, Holevo capacity

Acknowledgements. The study was supported by the Russian Foundation for Basic Research (project no. 16-37-60070 mol-a-dk).

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For citation: Filippov S.N. Evaluation of non-unital qubit channel capacities. Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, 2018, vol. 160, no. 2, pp. 258–265.

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