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arXiv · 1510.08960

Loss-tolerant measurement-device-independent quantum random number generation

Zhu Cao·Hongyi Zhou·Xiongfeng Ma
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Abstract

Quantum random number generators (QRNGs) output genuine random numbers based upon the uncertainty principle. A QRNG contains two parts in general --- a randomness source and a readout detector. How to remove detector imperfections has been one of the most important questions in practical randomness generation. We propose a simple solution, measurement-device-independent QRNG, which not only removes all detector side channels but is robust against losses. In contrast to previous fully device-independent QRNGs, our scheme does not require high detector efficiency or nonlocality tests. Simulations show that our protocol can be implemented efficiently with a practical coherent state laser and other standard optical components. The security analysis of our QRNG consists mainly of two parts: measurement tomography and randomness quantification, where several new techniques are developed to characterize the randomness associated with a positive-operator valued measure.

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Zhu Cao, Hongyi Zhou, Xiongfeng Ma. 2015-10-30. Loss-tolerant measurement-device-independent quantum random number generation. https://doi.org/10.1088/1367-2630%2F17%2F12%2F125011

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