Mathematical Techniques for Quantum Communication Theory
arXiv:quant-ph/9604001
Abstract
We present mathematical techniques for addressing two closely related questions in quantum communication theory. In particular, we give a statistically motivated derivation of the Bures-Uhlmann measure of distinguishability for density operators, and we present a simplified proof of the Holevo upper bound to the mutual information of quantum communication channels. Both derivations give rise to novel quantum measurements.
12 pages, standard LaTeX, manuscript placed in archive because of the relative unavailability of the journal in which it appears