Optimal entanglement formulas for entanglement-assisted quantum coding

@article{Wilde2008OptimalEF,
  title={Optimal entanglement formulas for entanglement-assisted quantum coding},
  author={M. Wilde and T. Brun},
  journal={Physical Review A},
  year={2008},
  volume={77},
  pages={064302}
}
We provide several formulas that determine the optimal number of entangled bits (ebits) that a general entanglement-assisted quantum code requires. Our first theorem gives a formula that applies to an arbitrary entanglement-assisted block code. Corollaries of this theorem give formulas that apply to a code imported from two classical binary block codes, to a code imported from a classical quaternary block code, and to a continuous-variable entanglement-assisted quantum block code. Finally, we… Expand
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