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渐近优良且具有可寻址横向T门的量子码

Asymptotically Good Quantum Codes with Addressable Transversal T Gates

Tongyin Lin, Bujiao Wu, Bin Cheng

arXiv 2609.35129首次发表:更新:

发表机构

International Quantum Academy, Shenzhen; Centre for Quantum Technologies, National University of Singapore(深圳国际量子研究院; 新加坡国立大学量子技术中心)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

本文构造了具有恒定速率和线性距离的二元CSS码族,实现完全可寻址的横向T门,无需后续校正,并优化了渐近界限常数。

AI 中文摘要

设计同时具有横向非Clifford门和良好纠错参数的量子码是容错量子计算中的一个重要目标。在此,我们构造了一个显式的二元CSS码族,其具有恒定速率和线性距离,并允许完全可寻址的横向$T$门。具体而言,任何指定的逻辑$T$幂的张量积都可以通过物理$T$幂的张量积来实现,无需任何后续校正。我们的构造结合了代数几何码与适当的二元嵌入,以获得二元码的广义可除性。这种可除性进而使得完全可寻址的横向$T$门成为可能。此外,我们将最小二元嵌入长度问题表述为仿射空间上的最小权重问题,并在数值上改善了渐近速率和相对距离界限中的常数。

英文摘要

Designing quantum codes with both transversal non-Clifford gates and good error-correcting parameters is an important goal in fault-tolerant quantum computation. Here, we construct an explicit family of binary CSS codes with constant rate and linear distance that admit fully addressable transversal $T$ gates. Specifically, any prescribed tensor product of logical powers of $T$ is implemented by a tensor product of physical powers of $T$, without any subsequent correction. Our construction combines algebraic-geometry codes with suitable binary embedding to obtain generalized divisibility of binary codes. This divisibility then enables fully addressable transversal $T$ gates. Furthermore, we formulate the minimum binary embedding length problem as a minimum-weight problem over an affine space and numerically improve the constants in the asymptotic rate and relative-distance bounds.

Comments27 pages, no figures. Comments are welcome

论文原文

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