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<p>Random numbers play a crucial role in numerous scientific applications. Source-independent quantum random number generators (SI-QRNGs) can offer true randomness by leveraging the fundamental principles of quantum mechanics, eliminating the need for a trusted source. Silicon photonics demonstrates significant promise for QRNG due to its benefits in miniaturization, cost-effective device manufacturing, and compatibility with CMOS microelectronics. This study experimentally demonstrates a silicon-based discrete variable SI-QRNG. Our SI-QRNG system achieves a low error rate of only 0.21%, thanks to the inherent stability of the silicon-based decoder chip and its excellent polarization extinction ratio. Additionally, by using a laser with a higher repetition rate and a robust simulation model, we achieve the highest quantum random number generation rate of 9.49 Mbits per second. Our research paves the way for integrated SI-QRNGs, providing a cost-effective and robust secure QRNG module for next-generation communications.</p>

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Source-independent quantum random number generators with integrated silicon photonics

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月3日

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  • Yongqiang Du,
  • Xin Hua,
  • Zhengeng Zhao,
  • Xiaoran Sun,
  • Zhenrong Zhang,
  • Xi Xiao,
  • Kejin Wei

摘要

Random numbers play a crucial role in numerous scientific applications. Source-independent quantum random number generators (SI-QRNGs) can offer true randomness by leveraging the fundamental principles of quantum mechanics, eliminating the need for a trusted source. Silicon photonics demonstrates significant promise for QRNG due to its benefits in miniaturization, cost-effective device manufacturing, and compatibility with CMOS microelectronics. This study experimentally demonstrates a silicon-based discrete variable SI-QRNG. Our SI-QRNG system achieves a low error rate of only 0.21%, thanks to the inherent stability of the silicon-based decoder chip and its excellent polarization extinction ratio. Additionally, by using a laser with a higher repetition rate and a robust simulation model, we achieve the highest quantum random number generation rate of 9.49 Mbits per second. Our research paves the way for integrated SI-QRNGs, providing a cost-effective and robust secure QRNG module for next-generation communications.