Realization of an Error-Correcting Surface Code with Superconducting Qubits
Abstract
Quantum error correction is a critical technique for transitioning from noisy intermediate-scale quantum (NISQ) devices to fully fledged quantum computers. The surface code, which has a high threshold error rate, is the leading quantum error correction code for two-dimensional grid architecture. So far, the repeated error correction capability of the surface code has not been realized experimentally. Here, we experimentally implement an error-correcting surface code, the distance-3 surface code which consists of 17 qubits, on the \textit{Zuchongzhi} 2.1 superconducting quantum processor. By executing several consecutive error correction cycles, the logical error can be significantly reduced after applying corrections, achieving the repeated error correction of surface code for the first time. This experiment represents a fully functional instance of an error-correcting surface code, providing a key step on the path towards scalable fault-tolerant quantum computing.
Cite
@article{arxiv.2112.13505,
title = {Realization of an Error-Correcting Surface Code with Superconducting Qubits},
author = {Youwei Zhao and Yangsen Ye and He-Liang Huang and Yiming Zhang and Dachao Wu and Huijie Guan and Qingling Zhu and Zuolin Wei and Tan He and Sirui Cao and Fusheng Chen and Tung-Hsun Chung and Hui Deng and Daojin Fan and Ming Gong and Cheng Guo and Shaojun Guo and Lianchen Han and Na Li and Shaowei Li and Yuan Li and Futian Liang and Jin Lin and Haoran Qian and Hao Rong and Hong Su and Lihua Sun and Shiyu Wang and Yulin Wu and Yu Xu and Chong Ying and Jiale Yu and Chen Zha and Kaili Zhang and Yong-Heng Huo and Chao-Yang Lu and Cheng-Zhi Peng and Xiaobo Zhu and Jian-Wei Pan},
journal= {arXiv preprint arXiv:2112.13505},
year = {2023}
}