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量子信息存储超过180秒使用28Si"半导体真空"中的供体旋转
M Steger1, K Saeedi, M L W Thewalt
1Department of Physics, Simon Fraser University, Burnaby, BC, Canada.
Science (New York, N.Y.)
|June 9, 2012
概括
研究人员开发了一种使用丰富-28进行精确控制和测量核旋转的新方法. 这一突破使得-31核磁共振的高度灵敏检测成为可能,实现了超过180秒的固态相干时间.
科学领域:
- 量子计算是一种量子计算.
- 固态物理 固态物理
- 材料科学是一种材料科学.
背景情况:
- 量子计算机需要孤立的,具有长时间连贯性的可测量系统.
- 固体中的核旋转提供了长时间的连贯性,但缺乏初始化和检测方法.
- 现有的方法在敏感性和初始化核自旋状态方面扎.
研究的目的:
- 开发用于初始化和读取固体中核自旋状态的先进技术.
- 为了利用丰富-28的独特光学特性用于量子信息处理.
- 为了在稀释度下实现高度敏感的核磁共振检测.
主要方法:
- 利用在富含-28.8中的超细分辨率光学转换.
- 采用高效的奥格尔光电离子用于核超极化.
- 集成的光学过渡与电气旋转读取,用于敏感的检测.
- 应用了这些技术来检测-28.8中的稀-31
主要成果:
- 演示了快速的核超极化和电自旋读数.
- 实现了高度敏感的核磁共振探测稀释-31.
- 测量了超过180秒的固态相干时间,用于核旋转.
- 能够在以前传统方法无法达到的度上进行检测.
结论:
- 丰富-28的光学特性促进了先进的核自旋控制和读出.
- 开发的技术克服了固态量子信息处理的主要局限性.
- 这项工作为高度连贯的固态量子系统铺平了道路.
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