中国物理B ›› 2022, Vol. 31 ›› Issue (1): 10303-010303.doi: 10.1088/1674-1056/ac11e3

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Determination of quantum toric error correction code threshold using convolutional neural network decoders

Hao-Wen Wang(王浩文)2, Yun-Jia Xue(薛韵佳)2, Yu-Lin Ma(马玉林)2, Nan Hua(华南)2, and Hong-Yang Ma(马鸿洋)1,†   

  1. 1 School of Sciences, Qingdao University of Technology, Qingdao 266033, China;
    2 School of Information and Control Engineering, Qingdao University of Technology, Qingdao 266033, China
  • 收稿日期:2021-06-07 修回日期:2021-06-25 接受日期:2021-07-07 出版日期:2021-12-03 发布日期:2021-12-14
  • 通讯作者: Hong-Yang Ma E-mail:hongyang_ma@aliyun.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11975132 and 61772295), the Natural Science Foundation of Shandong Province, China (Grant No. ZR2019YQ01), and the Project of Shandong Province Higher Educational Science and Technology Program, China (Grant No. J18KZ012).

Determination of quantum toric error correction code threshold using convolutional neural network decoders

Hao-Wen Wang(王浩文)2, Yun-Jia Xue(薛韵佳)2, Yu-Lin Ma(马玉林)2, Nan Hua(华南)2, and Hong-Yang Ma(马鸿洋)1,†   

  1. 1 School of Sciences, Qingdao University of Technology, Qingdao 266033, China;
    2 School of Information and Control Engineering, Qingdao University of Technology, Qingdao 266033, China
  • Received:2021-06-07 Revised:2021-06-25 Accepted:2021-07-07 Online:2021-12-03 Published:2021-12-14
  • Contact: Hong-Yang Ma E-mail:hongyang_ma@aliyun.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11975132 and 61772295), the Natural Science Foundation of Shandong Province, China (Grant No. ZR2019YQ01), and the Project of Shandong Province Higher Educational Science and Technology Program, China (Grant No. J18KZ012).

摘要: Quantum error correction technology is an important solution to solve the noise interference generated during the operation of quantum computers. In order to find the best syndrome of the stabilizer code in quantum error correction, we need to find a fast and close to the optimal threshold decoder. In this work, we build a convolutional neural network (CNN) decoder to correct errors in the toric code based on the system research of machine learning. We analyze and optimize various conditions that affect CNN, and use the RestNet network architecture to reduce the running time. It is shortened by 30%-40%, and we finally design an optimized algorithm for CNN decoder. In this way, the threshold accuracy of the neural network decoder is made to reach 10.8%, which is closer to the optimal threshold of about 11%. The previous threshold of 8.9%-10.3% has been slightly improved, and there is no need to verify the basic noise.

关键词: quantum error correction, toric code, convolutional neural network (CNN) decoder

Abstract: Quantum error correction technology is an important solution to solve the noise interference generated during the operation of quantum computers. In order to find the best syndrome of the stabilizer code in quantum error correction, we need to find a fast and close to the optimal threshold decoder. In this work, we build a convolutional neural network (CNN) decoder to correct errors in the toric code based on the system research of machine learning. We analyze and optimize various conditions that affect CNN, and use the RestNet network architecture to reduce the running time. It is shortened by 30%-40%, and we finally design an optimized algorithm for CNN decoder. In this way, the threshold accuracy of the neural network decoder is made to reach 10.8%, which is closer to the optimal threshold of about 11%. The previous threshold of 8.9%-10.3% has been slightly improved, and there is no need to verify the basic noise.

Key words: quantum error correction, toric code, convolutional neural network (CNN) decoder

中图分类号:  (Quantum error correction and other methods for protection against decoherence)

  • 03.67.Pp
03.67.-a (Quantum information) 87.64.Aa (Computer simulation)