Quantum error mitigation for fault-tolerant quantum computing release_ttzylnvp45gqtnrwj2lyhk2h2i

by Yasunari Suzuki, Suguru Endo, Keisuke Fujii, Yuuki Tokunaga

Released as a article .

2021  

Abstract

Fault-tolerant quantum computing (FTQC) is a form of universal quantum computing that suppresses physical errors via quantum error correction (QEC). Although the effective error rate decreases exponentially with the code distance, it is expected that the number of available physical qubits and the T-gate count will be restricted in the early years of FTQC. Meanwhile, quantum error mitigation (QEM) was recently introduced for suppressing errors in noisy intermediate-scale quantum (NISQ) devices; it improves the computation accuracy of near-term quantum algorithms with its overhead being a greater number of samples. In this work, we integrate QEC and QEM into an efficient FTQC architecture that effectively increases the code distance and T-gate count. This scheme will dramatically alleviate the required overheads of FTQC for achieving high-accuracy quantum computing.
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Type  article
Stage   submitted
Date   2021-03-09
Version   v3
Language   en ?
arXiv  2010.03887v3
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