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Open Quantum Systems Decoherence

Gauge invariant information concerning quantum channels

arXiv
Authors: Łukasz Rudnicki, Zbigniew Puchała, Karol Zyczkowski

Year

2017

Paper ID

44467

Status

Preprint

Abstract Read

~2 min

Abstract Words

61

Citations

N/A

Abstract

Motivated by the gate set tomography we study quantum channels from the perspective of information which is invariant with respect to the gauge realized through similarity of matrices representing channel superoperators. We thus use the complex spectrum of the superoperator to provide necessary conditions relevant for complete positivity of qubit channels and to express various metrics such as average gate fidelity.

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  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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  • Motivated by the gate set tomography we study quantum channels from the perspective of information which is invariant with respect to the gauge realized through similarity of...

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