捕获离子量子位的高保真无激光通用控制
R Srinivas1,2,3, S C Burd4,5,6, H M Knaack4,5
1National Institute of Standards and Technology, Boulder, CO, USA. raghavendra.srinivas@colorado.edu.
Nature
|September 9, 2021
概括
研究人员展示了高保真,无激光的捕获离子量子位的通用控制. 这一突破使用磁场和微波,为可扩展的量子计算和网络铺平了道路.
科学领域:
- 量子信息科学
- 原子物理
- 量子计算
背景情况:
- 多个量子比特的通用控制对于量子计算,模拟和网络是必不可少的.
- 捕获的原子离子提供高可靠性量子比特操作, 但现有的通用控制方法有局限性.
- 没有激光的方法承诺可扩展性,
研究的目的:
- 为了展示高准确度, 无激光控制被困的离子量子位.
- 开发一种使用磁场和微波纠量子位的强大方法.
- 为了实现可扩展和集成的捕获离子量子处理器.
主要方法:
- 使用一种结合射频磁场梯度和微波磁场的方案.
- 创建两个被困离子量子位的对称和反对称的最大纠状态.
- 纠正了初始化错误的真实性.
主要成果:
- 实现了两个被困离子量子位的高保真无激光通用控制.
- 对于对称和反对称状态的[公式:见文本]和[公式:见文本]的证明纠忠实性.
- 开发的方案是强大的反对脱节和适用于各种离子物种.
结论:
- 这种无激光的方法为被困离子量子处理器的通用控制提供了可扩展的途径.
- 与芯片上的光子和探测器的集成可以导致完全集成芯片的量子计算.
- 该方法可以同时对多个离子对进行操作,而不会增加复杂性.
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