QECOOL: On-Line Quantum Error Correction with a Superconducting Decoder for Surface Code

Yosuke Ueno, Masaaki Kondo, Masamitsu Tanaka, Yasunari Suzuki, Yutaka Tabuchi

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

Due to the low error tolerance of a qubit, detecting and correcting errors on it is essential for fault-tolerant quantum computing. Surface code (SC) associated with its decoding algorithm is one of the most promising quantum error correction (QEC) methods. QEC needs to be very power-efficient since the power budget is limited inside of a dilution refrigerator for superconducting qubits by which one of the most successful quantum computers (QCs) is built. In this paper, we propose an online-QEC algorithm and its hardware implementation with SFQ based superconducting digital circuits. We design a key building block of the proposed hardware with an SFQ cell library and evaluate it by the SPICE-level simulation. Each logic element is composed of about 3000 Josephson junctions and power consumption is about 2.78 μW when operating with 2 GHz clock frequency which meets the required decoding speed. Our decoder is simulated on a quantum error simulator for code distances 5 to 13 and achieves a 1.0% accuracy threshold.

本文言語English
ホスト出版物のタイトル2021 58th ACM/IEEE Design Automation Conference, DAC 2021
出版社Institute of Electrical and Electronics Engineers Inc.
ページ451-456
ページ数6
ISBN(電子版)9781665432740
DOI
出版ステータスPublished - 2021 12月 5
外部発表はい
イベント58th ACM/IEEE Design Automation Conference, DAC 2021 - San Francisco, United States
継続期間: 2021 12月 52021 12月 9

出版物シリーズ

名前Proceedings - Design Automation Conference
2021-December
ISSN(印刷版)0738-100X

Conference

Conference58th ACM/IEEE Design Automation Conference, DAC 2021
国/地域United States
CitySan Francisco
Period21/12/521/12/9

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 制御およびシステム工学
  • 電子工学および電気工学
  • モデリングとシミュレーション

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