Youwei Zhao; Yangsen Ye; He-Liang Huang; Yiming Zhang; Dachao Wu; Huijie Guan; Qingling Zhu; Zuolin Wei; Tan He; Sirui Cao; Fusheng Chen; Tung-Hsun Chung; Huiqiu Deng; Daojin Fan; Ming Gong; Cheng Guo; Shaojun Guo; Lianchen Han; Na Li; Shaowei Li; Yuan Li; Futian Liang; Jin Lin; Haoran Qian; Hao Rong; Hong Su; Lihua Sun; Shiyu Wang; Yulin Wu; Yu Xu; Chong Ying; Jiale Yu; Chen Zha; Kaili Zhang; Yong-Heng Huo; Chao‐Yang Lu; Cheng-Zhi Peng; Xiaobo Zhu; Jian-Wei Pan · 2022 · Physical Review Letters
Paper
Quantum error correction is a critical technique for transitioning from noisy intermediate-scale quantum 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-three surface code which consists of 17 qubits, on the 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.
Analysis
This paper reports the first experimental realization of a repeated error-correcting surface code using superconducting qubits, significantly reducing logical errors and advancing towards fault-tolerant quantum computing.
Discovery
Pau Escofet; Carmen G. Almudéver; Sergi Abadal; Eduard Alarcón
Jong Yeon Lee; Koki Okada; Nishad Maskara; Kenta Kasai; Hengyun Zhou
Jubo Xu; Abbas B. Ziad; Prakash Murali; Hongxiang Fan
Shantanu R. Jha; Shoumik D. Chowdhury; Gabriele Rolleri; Anaida Ali; Lev-Arcady Sellem; Réouven Assouly; David Pahl; Lukas Pahl; Junyoung An; Farid Hassani; Hung-Yu Tsao; Chia-Chin Tsai; Aranya Goswami; Gabriel D. Cutter; Jeremie Boudreault; Jeffrey M. Gertler; Michael A. Gingras; Bethany M. Niedzielski; Jeffrey M. Knecht; Mollie E. Schwartz; Kyle Serniak; Jeffrey A. Grover; Baptiste Royer; Max Hays; William D. Oliver
Frederic St-Amand; Jean-Philippe Burelle; Baptiste Royer
Shantanu R. Jha; Shoumik D. Chowdhury; Gabriele Rolleri; Anaida Ali; Lev-Arcady Sellem; Réouven Assouly; David Pahl; Lukas Pahl; Junyoung An; Farid Hassani; Hung-Yu Tsao; Chia-Chin Tsai; Aranya Goswami; Jeremie Boudreault; Jeffrey M. Gertler; Michael A. Gingras; Bethany M. Niedzielski; Jeffrey M. Knecht; Mollie E. Schwartz; Kyle Serniak; Jeffrey A. Grover; Baptiste Royer; Max Hays; William D. Oliver
Source record