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arXiv · 1211.0650

Maximal quantum randomness in Bell tests

Chirag Dhara·Giuseppe Prettico·Antonio Acin
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Abstract

The non-local correlations exhibited when measuring entangled particles can be used to certify the presence of genuine randomness in Bell experiments. While non-locality is necessary for randomness certification, it is unclear when and why non-locality certifies maximal randomness. We provide here a simple argument to certify the presence of maximal local and global randomness based on symmetries of a Bell inequality and the existence of a unique quantum probability distribution that maximally violates it. Using our findings, we prove the existence of N-party Bell test attaining maximal global randomness, that is, where a combination of measurements by each party provides N perfect random bits.

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Chirag Dhara, Giuseppe Prettico, Antonio Acin. 2012-11-12. Maximal quantum randomness in Bell tests. https://doi.org/10.1103/physreva.88.052116

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