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Derivation of classical capacity of quantum channel for discrete information source

Kentaro Kato·Masao Osaki·Osamu Hirota
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Abstract

In this letter, we prove that the classical capacity of quantum channel for $M$ 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.

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Kentaro Kato, Masao Osaki, Osamu Hirota. 1998-11-30. Derivation of classical capacity of quantum channel for discrete information source. https://doi.org/10.1016/s0375-9601(98)00896-2

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