半设备独立的随机性扩展使用n→1平价无视的量子随机访问代码
Xunan Wang1, Xu Chen2, Mengke Xu1
1College of Information Engineering, China Jiliang University, Hangzhou 310018, China.
Entropy (Basel, Switzerland)
|July 29, 2025
概括
这项研究引入了一种新方法,用于使用平价隐形量子随机访问代码 (PO-QRAC) 产生安全的量子随机性. 该协议增强了随机性认证,并优于以前的方法,特别是在n=4.4的情况下.
科学领域:
- 量子信息科学 量子信息科学
- 量子密码学 量子密码学
- 量子力学的基础 量子力学的基础
背景情况:
- 量子力学提供了真正的随机性,因为固有的不确定性.
- 独立于设备 (DI) 和半独立于设备 (SDI) 的框架确保了对设备缺陷的随机性安全性.
- 随机性的认证依赖于违反广义的贝尔不等式.
研究的目的:
- 提出一种新的SDI随机性扩展协议,使用n→1的平价隐形量子随机访问代码 (PO-QRAC).
- 通过违反一个二维量子见证来证明真实量子随机性的存在.
- 分析拟议协议的性能和随机性认证能力.
主要方法:
- 基于PO-QRAC的SDI随机性扩展协议的开发.
- 对n的各种值的最大预期成功概率的推导.
- 建立可证明的最小和量子证值之间的分析关系.
主要成果:
- 拟议的协议通过二维量子证人违规证明了量子随机性.
- 对于n=4,预期的成功概率超过了现有的上限.
- PO-QRAC 协议证实给定的证人值比标准 QRAC 更多的随机性.
- 3→1 PO-QRAC配置在平价-忽略性约束下显示了最佳的随机性扩展性能.
结论:
- 新的SDI协议有效地扩展和证明了量子随机性.
- 与标准QRAC相比,PO-QRAC提供了增强的随机性认证.
- 3→1 PO-QRAC 提供了在研究框架内随机性扩展的最佳方法.
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