تقرير
Scalable surface code decoders with parallelization in time
| العنوان: | Scalable surface code decoders with parallelization in time |
|---|---|
| المؤلفون: | Tan, Xinyu, Zhang, Fang, Chao, Rui, Shi, Yaoyun, Chen, Jianxin |
| سنة النشر: | 2022 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | Fast classical processing is essential for most quantum fault-tolerance architectures. We introduce a sliding-window decoding scheme that provides fast classical processing for the surface code through parallelism. Our scheme divides the syndromes in spacetime into overlapping windows along the time direction, which can be decoded in parallel with any inner decoder. With this parallelism, our scheme can solve the decoding throughput problem as the code scales up, even if the inner decoder is slow. When using min-weight perfect matching and union-find as the inner decoders, we observe circuit-level thresholds of $0.68\%$ and $0.55\%$, respectively, which are almost identical to $0.70\%$ and $0.55\%$ for the batch decoding. Comment: Main text: 6 pages, 3 figures. Supplementary material: 18 pages, 14 figures. V2: added data and updated general formalism |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2209.09219 |
| رقم الأكسشن: | edsarx.2209.09219 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |