注意：具备实时提取功能的全集成3.2 Gbps量子随机数发生器。

Note: Fully integrated 3.2 Gbps quantum random number generator with real-time extraction.

作者信息

Zhang Xiao-Guang, Nie You-Qi, Zhou Hongyi, Liang Hao, Ma Xiongfeng, Zhang Jun, Pan Jian-Wei

机构信息

Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.

Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing 100084, China.

出版信息

Rev Sci Instrum. 2016 Jul;87(7):076102. doi: 10.1063/1.4958663.

DOI:10.1063/1.4958663

PMID:27475609

Abstract

We present a real-time and fully integrated quantum random number generator (QRNG) by measuring laser phase fluctuations. The QRNG scheme based on laser phase fluctuations is featured for its capability of generating ultra-high-speed random numbers. However, the speed bottleneck of a practical QRNG lies on the limited speed of randomness extraction. To close the gap between the fast randomness generation and the slow post-processing, we propose a pipeline extraction algorithm based on Toeplitz matrix hashing and implement it in a high-speed field-programmable gate array. Further, all the QRNG components are integrated into a module, including a compact and actively stabilized interferometer, high-speed data acquisition, and real-time data post-processing and transmission. The final generation rate of the QRNG module with real-time extraction can reach 3.2 Gbps.

摘要

我们通过测量激光相位涨落展示了一种实时且完全集成的量子随机数发生器（QRNG）。基于激光相位涨落的QRNG方案以其生成超高速随机数的能力为特色。然而，实际QRNG的速度瓶颈在于随机数提取的有限速度。为了弥合快速随机数生成与缓慢后处理之间的差距，我们提出了一种基于托普利兹矩阵哈希的流水线提取算法，并在高速现场可编程门阵列中实现了该算法。此外，所有QRNG组件都集成到一个模块中，包括一个紧凑且主动稳定的干涉仪、高速数据采集以及实时数据后处理和传输。具有实时提取功能的QRNG模块的最终生成速率可达3.2 Gbps。