We determine the set of the Bloch vectors for N-level systems, generalizing the familiar Bloch ball in 2-level systems. An origin of the structural difference from the Bloch ball in 2-level systems is clarified.
Cite
@article{arxiv.quant-ph/0301152,
title = {The Bloch Vector for N-Level Systems},
author = {Gen Kimura},
journal= {arXiv preprint arXiv:quant-ph/0301152},
year = {2009}
}
Comments
REVTeX4, 16 pages, 2 EPS figures, add some references, correct some typos