Informational power of quantum measurements

@article{DallArno2011InformationalPO,
  title={Informational power of quantum measurements},
  author={Michele Dall’Arno and Giacomo Mauro D’Ariano and Massimiliano F. Sacchi},
  journal={Physical Review A},
  year={2011},
  volume={83},
  pages={062304}
}
We introduce the informational power of a quantum measurement as the maximum amount of classical information that the measurement can extract from any ensemble of quantum states. We prove the additivity by showing that the informational power corresponds to the classical capacity of a quantum-classical channel. We restate the problem of evaluating the informational power as the maximization of the accessible information of a suitable ensemble. We provide a numerical algorithm to find an optimal… 

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