Classical information capacity of a class of quantum channels

  title={Classical information capacity of a class of quantum channels},
  author={Michael M. Wolf and Jens Eisert},
  journal={New Journal of Physics},
We consider the additivity of the minimal output entropy and the classical information capacity of a class of quantum channels. For this class of channels, the norm of the output is maximized for the output being a normalized projection. We prove the additivity of the minimal output Renyi entropies with entropic parameters α [0, 2], generalizing an argument by Alicki and Fannes, and present a number of examples in detail. In order to relate these results to the classical information capacity… Expand
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