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在Floquet-Bacon-Shor代码中使用动态量子位的逻辑运算
Xuandong Sun1,2,3, Longcheng Li4,5, Zhiyi Wu2,6
1Southern University of Science and Technology, Shenzhen Institute for Quantum Science and Engineering, Shenzhen 518055, China.
Physical review letters
|December 12, 2025
概括
研究人员在一个超导处理器上实验实施了Floquet-Bacon-Shor代码,一种量子错误校正. 这表明了利用动态逻辑量子比特进行资源高效,容错的量子计算的新途径.
科学领域:
- 量子信息科学 量子信息科学
- 量子计算是一种量子计算.
- 量子错误纠正方法 量子错误纠正方法
背景情况:
- 量子错误校正 (QEC) 对于容错 (FT) 量子计算至关重要,它可以保护量子系统免受噪声的影响.
- 稳定器代码和表面和颜色代码一样是建立的QEC方法.
- 时间动态QEC,包括Floquet代码,为FT量子计算提供了新的可能性.
研究的目的:
- 在超导量子处理器上实验实现Floquet-Bacon-Shor代码.
- 为了证明动态逻辑量子比特的编码和稳定.
- 展示Floquet代码在资源效率高的FT量子计算中的潜力.
主要方法:
- 在3x3超导量子比特网格上实现Floquet-Bacon-Shor代码.
- 编码和测量两个量子比特逻辑状态,包括一个动态和一个静态逻辑量子比特.
- 应用通用单量子位门和用于纠的逻辑 CNOT 门.
主要成果:
- 成功编码和测量两个量子位逻辑状态的FT编码.
- 通过反复检测错误来稳定编码状态.
- 在动态和静态量子比特之间生成一个错误检测的逻辑贝尔状态,具有75.9%的保真度.
- 在动态逻辑量子位上展示通用单量子位门.
结论:
- 实验实现验证了Floquet-Bacon-Shor代码用于量子错误校正.
- 方块代码在提高错误纠正能力和代码性能方面表现有前途.
- 这项工作突出了动态QEC在资源效率高的FT量子计算中的潜力.
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