通过相位估计检测玻色代码的错误检测的一般方法
Yuan-De Jin1,2, Shi-Yu Zhang3, Ulrik L Andersen4
1Institute of Semiconductors, State Key Laboratory of Semiconductor Physics and Chip Technologies, Chinese Academy of Sciences, Beijing 100083, China.
Physical review letters
|October 19, 2025
概括
我们开发了一种使用自适应量子相位估计来检测玻色子量子错误纠正代码中的错误的新方法. 这种方法实现了海森堡有限的精度,并且对当前的实验是可行的.
科学领域:
- 量子信息科学 量子信息科学
- 量子错误纠正方法 量子错误纠正方法
- 量子计算是一种量子计算.
背景情况:
- 玻色子量子错误纠正代码对于构建容错量子计算机至关重要.
- 检测这些代码中的错误对于保持量子信息完整性至关重要.
- 现有的方法可能缺乏先进量子系统所需的精度或适用性.
研究的目的:
- 介绍 Bosonic 量子错误纠正代码中错误检测的一般和精确方法.
- 在当前的实验设置中证明拟议方法的可行性.
- 扩展开发的技术,以高效地生成福克状态.
主要方法:
- 使用自适应量子相估算算法.
- 采用单个ancilla量子位来协助错误综合征检测.
- 将该方法应用于各种玻色子代码,包括旋转对称和Gottsman-Kitaev-Preskill (GKP) 代码.
主要成果:
- 实现了错误检测精度的缩放与总演变时间相反,达到海森堡极限.
- 成功证明了在猫/双项码中检测激发损失错误和在GKP码中检测位移错误.
- 展示了使用扩展方法有效生成任意福克状态的能力.
结论:
- 拟议的自适应量子相估计为玻色子量子误差检测提供了一种通用和高度精确的方法.
- 该技术适用于广泛的玻色子代码,并且与当今的实验能力兼容.
- 这项工作为使用玻色子代码进行强大的量子信息处理提供了重大进展.
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