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

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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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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Recieved

October 23, 2017

Filippov Sergey Nikolaevich, Candidate of Physical and Mathematical Sciences, Senior Researcher; Associate Professor, Department of Theoretical Physics, Institute of Physics and Technology of Russian Academy of Sciences

Nahimovskii pr. 34, Moscow, 117218 Russia

Moscow Institute of Physics and Technology

Institutskiy per. 9, Dolgoprudny, Moscow Region, 141701 Russia

E-mail: sergey.filippov@phystech.edu

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