Entanglement can completely defeat quantum noise.

@article{Chen2011EntanglementCC,
  title={Entanglement can completely defeat quantum noise.},
  author={J. Chen and T. Cubitt and A. Harrow and G. Smith},
  journal={Physical review letters},
  year={2011},
  volume={107 25},
  pages={
          250504
        }
}
  • J. Chen, T. Cubitt, +1 author G. Smith
  • Published 2011
  • Medicine, Physics
  • Physical review letters
  • We describe two quantum channels that individually cannot send any classical information without some chance of decoding error. But together a single use of each channel can send quantum information perfectly reliably. This proves that the zero-error classical capacity exhibits superactivation, the extreme form of the superadditivity phenomenon in which entangled inputs allow communication over zero-capacity channels. But our result is stronger still, as it even allows zero-error quantum… CONTINUE READING

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