1996/04/01 by Christopher A. Fuchs, Carlton M. Caves · 2 citations
Physics and Astronomy · #quant-ph
published as Open Systems & Information Dynamics 3 (1995) 1 · 12 pages, standard LaTeX, manuscript placed in archive because of the relative unavailability of the journal in which it appears
arxiv created 1996/04/01 · arxiv updated 2009/12/01
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.