Quantum randomness certified by the uncertainty principle
Quantum randomness certified by the uncertainty principle
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DOI：
10.1103/physreva.90.052327
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发表时间：
2014-01
影响因子：
2.9
通讯作者：
G. Vallone;D. Marangon;M. Tomasin;P. Villoresi
中科院分区：
文献类型：
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作者：
G. Vallone;D. Marangon;M. Tomasin;P. Villoresi
我们提出了一种有效的方法来提取量子随机数生成器（QRNG）所能获得的真随机性量。通过重复量子系统的测量和在两个相互无偏的基之间交换，可以评估可实现的真正随机性的下界。利用最小熵和最大熵互补测量的不确定性原理，得到了边界。我们用两个不同的qrng测试了我们的方法，使用一系列量子位或夸脱，展示了实际应用的可扩展性。
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.