Pauli channel tomography with unknown channel directions
Quantum Physics
2013-04-17 v1 Mathematical Physics
math.MP
Abstract
In this paper we estimate the parameters of the qubit Pauli channel using the channel matrix formalism. The main novelty of this work is that we do not assume the directions of the Pauli channel to be known, but they are determined through the tomography process, too. The results show that for optimally estimating the contraction parameters and the channel matrix we should have input qubits and measurements in the channel directions. However, for optimally estimating the channel directions, we should use different tomography conditions.
Keywords
Cite
@article{arxiv.1304.4492,
title = {Pauli channel tomography with unknown channel directions},
author = {Dániel Virosztek and László Ruppert and Katalin M. Hangos},
journal= {arXiv preprint arXiv:1304.4492},
year = {2013}
}