Zhang Qiang, Deng Xiaowei, Tian Caixing, Su Xiaolong
Opt Lett. 2017 Mar 1;42(5):895-898. doi: 10.1364/OL.42.000895.
We produce two strings of quantum random numbers simultaneously from the intensity fluctuations of the twin beams generated by a nondegenerate optical parametric oscillator. Two strings of quantum random numbers with bit rates up to 60 Mb/s are extracted simultaneously with a suitable post-processing algorithm. By post-selecting the identical data from two raw sequences and using a suitable hash function, we also extract two strings of identical quantum random numbers. The obtained random numbers pass all NIST randomness tests. The presented scheme shows the feasibility of generating quantum random numbers from the intensity of a macroscopic optical field.
我们利用非简并光学参量振荡器产生的孪生光束的强度涨落，同时产生了两串量子随机数。通过合适的后处理算法，同时提取了比特率高达60 Mb/s的两串量子随机数。通过从两个原始序列中后选择相同的数据并使用合适的哈希函数，我们还提取了两串相同的量子随机数。所获得的随机数通过了所有美国国家标准与技术研究院（NIST）的随机性测试。所提出的方案展示了从宏观光场强度产生量子随机数的可行性。
