Distance measures to compare real and ideal quantum processes
Quantum Physics
2009-01-27 v2
Abstract
With growing success in experimental implementations it is critical to identify a "gold standard" for quantum information processing, a single measure of distance that can be used to compare and contrast different experiments. We enumerate a set of criteria such a distance measure must satisfy to be both experimentally and theoretically meaningful. We then assess a wide range of possible measures against these criteria, before making a recommendation as to the best measures to use in characterizing quantum information processing.
Cite
@article{arxiv.quant-ph/0408063,
title = {Distance measures to compare real and ideal quantum processes},
author = {Alexei Gilchrist and Nathan K. Langford and Michael A. Nielsen},
journal= {arXiv preprint arXiv:quant-ph/0408063},
year = {2009}
}
Comments
15 pages; this version in line with published version