Activation of Non-Local Quantum Resources

Miguel Navascues; Tamas Vertesi

doi:10.1103/PhysRevLett.106.060403

Activation of Non-Local Quantum Resources

Quantum Physics 2013-05-29 v3

Authors: Miguel Navascues , Tamas Vertesi

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Abstract

We find two two-qubit states such that any number of copies of one state or the other cannot violate the CHSH Bell inequality. However, their tensor product can produce a CHSH violation of at least 2.023. We also identify a CHSH-local state such that two copies of it are CHSH-violating. The tools employed here can be easily adapted to find instances of non-locality activation in arbitrary Bell scenarios.

Keywords

bell inequality

Cite

@article{arxiv.1010.5191,
  title  = {Activation of Non-Local Quantum Resources},
  author = {Miguel Navascues and Tamas Vertesi},
  journal= {arXiv preprint arXiv:1010.5191},
  year   = {2013}
}

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