没有漏洞的超导电路违反贝尔不等式
Simon Storz1, Josua Schär2, Anatoly Kulikov2
1Department of Physics, ETH Zurich, Zurich, Switzerland. simon.storz@phys.ethz.ch.
Nature
|May 10, 2023
概括
研究人员使用超导电路证明了贝尔不等式的无漏洞违反. 这证实了量子计算和通信技术相关的系统中的量子非局部性.
科学领域:
- 量子物理
- 量子信息科学
背景情况:
- 量子力学表现出叠加,纠和非局部性,这些基本特征与经典的局部因果关系有所不同.
- 贝尔测试使用纠的粒子对实验验证量子非局部性,最近的进展实现了无漏洞的演示.
研究的目的:
- 通过使用超导电路来证明贝尔不等式的无漏洞违反.
- 探索超导电路作为量子信息技术平台的潜力.
主要方法:
- 一对超导量子位的决定性纠.
- 通过30米冷链接对交错量子位进行快速,高准确度的测量.
- 克劳塞-霍恩-西蒙尼-霍尔特型贝尔不等式的评估超过一百万次试验.
主要成果:
- 观察到贝尔不等式有统计学意义的违反,平均S值为2.047±0.0033.
- 而P值小于10^-108, 提供了极强的证据反对局部现实主义.
- 在超导电路系统中成功证明非局部性.
结论:
- 超导电路可以展示和利用量子非局部性.
- 这项工作证实了超导电路是量子计算和通信的有前途平台.
- 非局部性已被确立为高级量子信息应用的潜在资源.
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