逻辑算法的相关解码与横向门的逻辑算法
Madelyn Cain1, Chen Zhao1,2, Hengyun Zhou1,2
1Department of Physics, <a href="https://ror.org/03vek6s52">Harvard University</a>, Cambridge, Massachusetts 02138, USA.
Physical review letters
|January 3, 2025
概括
量子错误校正对于量子计算至关重要. 联合解码与相关解码的量子比特显著减少了逻辑量子算法的时空开销.
科学领域:
- 量子计算是一种量子计算.
- 量子信息科学 量子信息科学
- 错误纠正代码 错误纠正代码
背景情况:
- 可扩展的量子计算依赖于量子错误校正.
- 高的时空开销是当前量子错误校正方法的一个主要挑战.
- 最近的实验显示了使用横向门的高效逻辑量子位操纵.
研究的目的:
- 为了提高逻辑量子算法的性能.
- 为了减少量子错误校正的时空开销.
- 为了研究对横向门的相关解码的好处.
主要方法:
- 共同解码量子比特,以考虑横向纠门期间的错误传播.
- 探索两个具有不同计算运行时间和精度的解码器.
- 利用稳定器测量误差的决定性传播.
主要成果:
- 相关解码提高了克利福德和非克利福德横向纠门的性能.
- 对于横向的克利福德电路,减少了噪音综合征提取回合从O ((d) 到O ((1)).
- 对深度逻辑克利福德电路的时空成本大幅降低,通过数值验证.
结论:
- 相关解码为早期的容错量子计算提供了显著的优势.
- 这种方法具有相当大的潜力,可以降低大规模逻辑算法的时空成本.
- 这些发现与量子计算最近的实验进步保持一致并扩展.
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