Asymmetric information capacities of reciprocal pairs of quantum channels

Matteo Rosati; Vittorio Giovannetti

doi:10.1103/PhysRevA.97.052318

Asymmetric information capacities of reciprocal pairs of quantum channels

Matteo Rosati, Vittorio Giovannetti

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

Abstract

© 2018 American Physical Society. Reciprocal pairs of quantum channels are defined as completely positive transformations which admit a rigid, distance-preserving, yet not completely positive transformation that allows one to reproduce the outcome of one from the corresponding outcome of the other. From a classical perspective these transmission lines should exhibit the same communication efficiency. This is no longer the case in the quantum setting: explicit asymmetric behaviors are reported studying the classical communication capacities of reciprocal pairs of depolarizing and Weyl-covariant channels.

Original language	English
Article number	052318
Journal	Physical Review A
Volume	97
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.97.052318
Publication status	Published - 15 May 2018

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