Corpus ID: 14546968

The classical capacity achievable by a quantum channel assisted by a limited entanglement

  title={The classical capacity achievable by a quantum channel assisted by a limited entanglement},
  author={Peter W. Shor},
  journal={Quantum Inf. Comput.},
  • P. Shor
  • Published 2004
  • Mathematics, Physics, Computer Science
  • Quantum Inf. Comput.
We give the trade-off curve showing the capacity of a quantum channel as a function of the amount of entanglement used by the sender and receiver for transmitting information. The endpoints of this curve are given by the Holevo-Schumacher-Westmoreland capacity formula and the entanglement-assisted capacity, which is the maximum over all input density matrices of the quantum mutual information. The proof we give is based on the Holevo-Schumacher-Westmoreland formula, and also gives a new and… Expand
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