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arXiv · 1401.7917

Quantum Randomness Certified by the Uncertainty Principle

G. Vallone·D. Marangon·M. Tomasin·P. Villoresi
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Abstract

We present an efficient method to extract the amount of true randomness that can be obtained by a Quantum Random Number Generator (QRNG). By repeating the measurements of a quantum system and by swapping between two mutually unbiased bases, a lower bound of the achievable true randomness can be evaluated. The bound is obtained thanks to the uncertainty principle of complementary measurements applied to min- and max- entropies. We tested our method with two different QRNGs, using a train of qubits or ququart, demonstrating the scalability toward practical applications.

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G. Vallone, D. Marangon, M. Tomasin, P. Villoresi. 2014-12-22. Quantum Randomness Certified by the Uncertainty Principle. https://doi.org/10.1103/physreva.90.052327

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