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arXiv · 1505.03837

Optimal randomness certification from one entangled bit

Antonio Acín·Stefano Pironio·Tamás Vértesi·Peter Wittek
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Abstract

By performing local projective measurements on a two-qubit entangled state one can certify in a device-independent way up to one bit of randomness. We show here that general measurements, defined by positive-operator-valued measures, can certify up to two bits of randomness, which is the optimal amount of randomness that can be certified from an entangled bit. General measurements thus provide an advantage over projective ones for device-independent randomness certification.

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Antonio Acín, Stefano Pironio, Tamás Vértesi, Peter Wittek. 2015-05-14. Optimal randomness certification from one entangled bit. https://doi.org/10.1103/physreva.93.040102

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