Derivation of classical capacity of quantum channel for discrete information source
arXiv:quant-ph/9811085 · doi:10.1016/S0375-9601(98)00896-2
Abstract
In this letter, we prove that the classical capacity of quantum channel for symmetric states is achieved by an uniform distribution on a priori probabilities. We also investigate non-symmetric cases such as a ternary amplitude shift keyed signal set and a 16-ary quadrature amplitude modulated signal set in coherent states.
9 pages, RevTeX, 3 figures(EPSF)