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arXiv · 0905.0578

A simple representation of quantum process tomography

Giuliano Benenti·Giuliano Strini
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Abstract

We show that the Fano representation leads to a particularly simple and appealing form of the quantum process tomography matrix $χ_{_F}$, in that the matrix $χ_{_F}$ is real, the number of matrix elements is exactly equal to the number of free parameters required for the complete characterization of a quantum operation, and these matrix elements are directly related to evolution of the expectation values of the system's polarization measurements. These facts are illustrated in the examples of one- and two-qubit quantum noise channels.

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Giuliano Benenti, Giuliano Strini. 2009-05-05. A simple representation of quantum process tomography. https://doi.org/10.1103/physreva.80.022318

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