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arXiv · 0911.3274

Perfect Quantum Privacy Implies Nonlocality

Remigiusz Augusiak·Daniel Cavalcanti·Giuseppe Prettico·Antonio Acin
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Abstract

Private states are those quantum states from which a perfectly secure cryptographic key can be extracted. They represent the basic unit of quantum privacy. In this work we show that all states belonging to this class violate a Bell inequality. This result establishes a connection between perfect privacy and nonlocality in the quantum domain.

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Remigiusz Augusiak, Daniel Cavalcanti, Giuseppe Prettico, Antonio Acin. 2011-01-05. Perfect Quantum Privacy Implies Nonlocality. https://doi.org/10.1103/physrevlett.104.230401

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