原子量子比特中的高保真度门和中电路擦除转换
Shuo Ma1,2, Genyue Liu1, Pai Peng1
1Department of Electrical and Computer Engineering, Princeton University, Princeton, NJ, USA.
Nature
|October 11, 2023
概括
研究人员使用-171 (Yb) 开发了一种新的中性原子量子位. 这种量子比特能够实现高保真性量子门,并将错误转化为可检测的擦除,用于容错量子计算.
科学领域:
- 量子信息科学
- 原子物理
- 量子计算
背景情况:
- 对于量子信息科学来说, 可扩展,高保真度的量子比特非常重要.
- 中性原子量子比特为量子计算和模拟提供了一个有前途的平台.
- 探索新的原子物种和纠错策略对于量子技术的进步至关重要.
研究的目的:
- 为了展示一个新的中性原子量子比特,利用元稳定171的核旋转.
- 实现高可靠性的单量子位和双量子位门.
- 实施中间电路错误检测机制,将错误转换为删除.
主要方法:
- 在171 Yb中利用了长期超稳定状态的核旋转来实现量子位.
- 快速激发到里德伯格状态进行门操作.
- 执行快速的中环检测,以识别并将错误转换为删除.
主要成果:
- 为一量子比特 (0.9990(1) 和两量子比特 (0.980(1) 门实现了高保真性.
- 证实了关错误的很大一部分导致量子位子空间的衰变.
- 将这些错误转换为可检测的删除,其余量子位的诱导错误概率低 (<10-5).
结论:
- 超稳定171Yb是中性原子量子位的一个有前途的平台.
- 开发的错误检测机制对于容错的量子计算是有效的.
- 这项工作推动了可扩展和高保真量子处理器的开发.
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