Cheng Jialin, Liang Shaocong, Qin Jiliang, Li Jiatong, Zeng Baiyun, Shi Yi, Yan Zhihui, Jia Xiaojun
Opt Express. 2024 May 6;32(10):18237-18246. doi: 10.1364/OE.520041.
Quantum random numbers play a crucial role in diverse applications, including cryptography, simulation, and artificial intelligence. In contrast to predictable algorithm-based pseudo-random numbers, quantum physics provides new avenues for generating theoretically true random numbers by exploiting the inherent uncertainty contained in quantum phenomena. Here, we propose and demonstrate a quantum random number generator (QRNG) using a prepared broadband squeezed state of light, where the randomness of the generated numbers entirely originates from the quantum noise introduced by squeezing operation rather than vacuum noise. The relationship between entropy rate and squeezing level is analyzed. Furthermore, we employ a source-independent quantum random number protocol to enhance the security of the random number generator.
量子随机数在包括密码学、模拟和人工智能在内的各种应用中发挥着关键作用。与基于可预测算法的伪随机数不同，量子物理通过利用量子现象中固有的不确定性，为生成理论上真正的随机数提供了新途径。在此，我们提出并演示了一种利用制备好的宽带压缩光态的量子随机数发生器（QRNG），其中生成数字的随机性完全源于压缩操作引入的量子噪声而非真空噪声。分析了熵率与压缩水平之间的关系。此外，我们采用一种与源无关的量子随机数协议来增强随机数发生器的安全性。
