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Open Quantum Systems Decoherence

Geometry of symmetric and non-invertible Pauli channels

arXiv
Authors: Katarzyna Siudzińska

Year

2020

Paper ID

20244

Status

Preprint

Abstract Read

~2 min

Abstract Words

77

Citations

N/A

Abstract

We analyze the geometry of positive and completely positive, trace preserving Pauli maps that are fully determined by up to two distinct parameters. This includes five classes of symmetric and non-invertible Pauli channels. Using the Hilbert-Schmidt metric in the space of the Choi-Jamio\lkowski states, we compute the relative volumes of entanglement breaking, time-local generated, and divisible channels. Finally, we find the shapes of the complete positivity regions in relation to the tetrahedron of all Pauli channels.

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  • We analyze the geometry of positive and completely positive, trace preserving Pauli maps that are fully determined by up to two distinct parameters.

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