Quantum cloning without signaling

Nicolas Gisin

doi:10.1016/S0375-9601(98)00170-4

Quantum cloning without signaling

Quantum Physics 2009-10-31 v1

Authors: Nicolas Gisin

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Abstract

Perfect Quantum Cloning Machines (QCM) would allow to use quantum nonlocality for arbitrary fast signaling. However perfect QCM cannot exist. We derive a bound on the fidelity of QCM compatible with the no-signaling constraint. This bound equals the fidelity of the Bu\v{z}ek-Hillery QCM.

Keywords

quantum cloning quantum computing

Cite

@article{arxiv.quant-ph/9801005,
  title  = {Quantum cloning without signaling},
  author = {Nicolas Gisin},
  journal= {arXiv preprint arXiv:quant-ph/9801005},
  year   = {2009}
}

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