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 that 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.
- Received 26 August 2004
DOI:https://doi.org/10.1103/PhysRevA.71.062310
©2005 American Physical Society