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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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基于时间复杂光学参数振荡器的5位全光学量子随机数生成器.

Shaojie Li, Xiaoxuan Zhu, Jintao Fan

    Optics express
    |November 29, 2023
    PubMed
    概括

    这项研究展示了一种5位随机数生成器,使用的是 femtosecond 退化光学参数振荡器 (DOPO). 该系统通过延长光学参数振荡器腔体来提高比特序列的可扩展性.

    科学领域:

    • 量子光学就是一个量子光学.
    • 信息安全信息安全.

    背景情况:

    • 随机数字对于安全的通信,量子计算和密码学至关重要.
    • 退化光学参数振荡器 (DOPO) 提供了由于量子过程非决定性而导致真正随机性的途径.
    • 随机数生成中DOPO的一个关键挑战是缩放比特序列长度.

    研究的目的:

    • 通过使用时间复合的 Femtosecond DOPO 系统来实验生成 5 位随机数流.
    • 为了应对基于DOPO的随机数生成中比特序列可扩展性的挑战.
    • 开发一个具有增强可扩展性的全光随机数发生器.

    主要方法:

    • 实现一个时间复杂的femtosecond退化的光学参数振荡器 (DOPO).
    • 整合一个多通道电池,将光学参数振荡器 (OPO) 腔延长到大约15米.
    • 在延长的腔内以50 MHz的重复率共振5个信号脉冲.
    • 通过干扰基本脉冲来表征输出相位状态.
    • 在1200位上使用条件概率分析验证随机性.

    主要成果:

    • 从五秒DOPO系统成功生成5位随机数流.
    • 一个长长的OPO腔 (∼15米) 的演示,能够在50MHz时共振5个信号脉冲.

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  • 确认值以上的二进制相源于真空波动,确保系统的随机性.
  • 实验验证生成的位序的随机性.

    • 结论:

    • 开发的方案成功生成了具有增强可扩展性的5位随机数流.
    • 使用带有多通道单元的延长OPO腔的方法有效地增加了位序长度.
    • 这项工作为可扩展的全光学随机数生成器的开发提供了一个有希望的方向.