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Qubit Channels Can Require More Than Two Inputs to Achieve Capacity

Quantum Physics 2009-11-07 v1

Abstract

We give examples of qubit channels that require three input states in order to achieve the Holevo capacity.

Cite

@article{arxiv.quant-ph/0109079,
  title  = {Qubit Channels Can Require More Than Two Inputs to Achieve Capacity},
  author = {Christopher King and Michael Nathanson and Mary Beth Ruskai},
  journal= {arXiv preprint arXiv:quant-ph/0109079},
  year   = {2009}
}

Comments

RevTex, 5 page, 4 figuress