超导量子比特阵列中的宇宙射线诱导的相关错误
Xuegang Li1, Junhua Wang1, Yao-Yao Jiang1,2,3
1Beijing Key Laboratory of Fault-Tolerant Quantum Computing, Beijing Academy of Quantum Information Sciences, Beijing, China.
Nature communications
|May 20, 2025
概括
量子计算中的相关错误可能是由宇宙射线的准粒子爆发引起的. 这项研究直接观察了子诱导的爆发,将它们的冲击与玛射线分开,并提出了一种新的检测方法.
科学领域:
- 量子信息科学 量子信息科学
- 量子计算是一种量子计算.
- 实验物理实验物理学
背景情况:
- 相关错误对量子错误纠正和容错量子计算构成重大威胁.
- 超导量子比特实验表明,由宇宙射线子和马射线触发的准粒子 (QP) 爆发是这些错误的来源.
研究的目的:
- 直接观察和描述由子诱导的准粒子爆发.
- 为了区分子和玛射线对相关错误的贡献.
- 调查QP爆发的动态和QP捕获的影响.
主要方法:
- 使用电荷平价跳跃和位翻转来监控QP爆发.
- 在稀释冰箱内使用两个子探测器来识别子事件.
- 监控同时的电荷平价跨越多个量子比特的跳跃.
主要成果:
- 直接观察直接由子诱导的QP爆发,导致相关错误.
- 成功地从子与玛射线中分离了错误贡献.
- 调查QP爆发动态和QP捕获对错误生成和粒子检测的影响.
结论:
- 子是QP爆发的直接原因,导致超导量子比特中的相关错误.
- 开发的多量子位电荷平价跳跃监测技术对QP爆发非常敏感.
- 这种方法显示了探测宇宙射线粒子,低质量暗物质和远红外光子的潜力.
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