Potential Capacities of Quantum Channels

@article{Winter2016PotentialCO,
  title={Potential Capacities of Quantum Channels},
  author={Andreas J. Winter and Dong Yang},
  journal={IEEE Transactions on Information Theory},
  year={2016},
  volume={62},
  pages={1415-1424}
}
We introduce potential capacities of quantum channels in an operational way and provide upper bounds for these quantities, which quantify the ultimate limit of usefulness of a channel for a given task in the best possible context. Unfortunately, except for a few isolated cases, potential capacities seem to be as hard to compute as their plain analogues. We thus study upper bounds on some potential capacities. For the classical capacity, we give an upper bound in terms of the entanglement of… CONTINUE READING

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