Activation of Non-Local Quantum Resources

Miguel Navascues, Tamas Vertesi

Research output: Contribution to journalArticle (Academic Journal)peer-review


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.
Original languageUndefined/Unknown
JournalPhysical Review Letters
Publication statusPublished - 25 Oct 2010


  • quant-ph

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