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通过平价测量和反来确定超导量子比特的纠
D Ristè1, M Dukalski, C A Watson
1Kavli Institute of Nanoscience, Delft University of Technology, PO Box 5046, 2600 GA Delft, The Netherlands.
Nature
|October 18, 2013
概括
研究人员展示了一种用于超导量子比特的新型平价度计,通过测量实现纠生成. 这一突破为固态系统中确定性量子误差校正铺平了道路.
科学领域:
- 量子力学就是量子力学.
- 量子信息科学 量子信息科学
- 固态物理 固态物理
背景情况:
- 量子测量通常会破坏叠加和纠.
- 通过测量产生纠,特别是平价测量,对于量子计算至关重要.
- 现有的平价计提议面临的挑战是为偶数和奇数平价结果创建纠.
研究的目的:
- 为了实现一种能够为偶数和奇数测量产生纠的平度计,产生了超导量子比特.
- 开发一种使用平价测量产生纠的确定性方法.
- 为固态量子系统中主动量子错误校正提供关键组件.
主要方法:
- 两个超导量子比特的时间解析,连续平价测量.
- 使用一个三维电路量子电力学架构.
- 使用相位敏感的参数放大和后选择.
- 将平价计集成到反控制循环中.
主要成果:
- 通过平价测量 (后选择) 实现了88%的忠实性纠生成.
- 使用反控制证明了具有66%忠实性的决定性纠生成.
- 成功创建了一个平价度量仪,可以为偶数和奇数平价结果生成纠.
结论:
- 开发的平价度计和反协议是量子计算的重大进展.
- 这些方法为固态平台的确定性量子误差校正提供了一条途径.
- 这项工作解决了实现强大的量子信息处理的关键挑战.
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