Cosmic-ray-induced correlated errors in superconducting qubit array

Correlated errors may devastate quantum error corrections that are necessary for the realization of fault-tolerant quantum computation. Recent experiments with superconducting qubits indicate that they can arise from quasiparticle (QP) bursts induced by cosmic-ray muons and γ-rays. Here, we use charge-parity jump and bit flip for monitoring QP bursts and two muon detectors in the dilution refrigerator for detecting muon events. We directly observe QP bursts leading to correlated errors that are induced solely by muons and separate the contributions of muons and γ-rays. We further investigate the dynamical process of QP burst and the impact of QP trapping on correlated errors and particle detection. The proposed method, which monitors multiqubit simultaneous charge-parity jumps, has high sensitivity to QP bursts and may find applications for the detection of cosmic-ray particles, low-mass dark matter, and far-infrared photons.

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Publication Details

Journal
Nature Communications
Published
2025-05-20
DOI
https://doi.org/10.1038/s41467-025-59778-z
Citations
14
Primary Topic
Quantum Computing Algorithms and Architecture
Type
article
Field-Weighted Citation Impact
34.73
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article

Cosmic-ray-induced correlated errors in superconducting qubit array

S. P. Zhao, Yao-Yao Jiang, Ming Gong, Yirong Jin et al.
14 citations
Nature Communications
Quantum Computing Algorithms and Architecture
34.73
article

Cosmic-ray-induced correlated errors in superconducting qubit array

S. P. Zhao, Yao-Yao Jiang, Ming Gong, Yirong Jin, Xiaoxia Cai, Haifeng Yu, Xuefeng Ding, Jun Zhou, Deng-Ke Ma, Zhaofeng Liu, Junhua Wang, Guangming Xue, Weijie Sun, Xuegang Li, Shuang Yang, Shuang-Yu Zheng, Mo Chen, Fei Yan
article en
14 citations

Abstract

Correlated errors may devastate quantum error corrections that are necessary for the realization of fault-tolerant quantum computation. Recent experiments with superconducting qubits indicate that they can arise from quasiparticle (QP) bursts induced by cosmic-ray muons and γ-rays. Here, we use charge-parity jump and bit flip for monitoring QP bursts and two muon detectors in the dilution refrigerator for detecting muon events. We directly observe QP bursts leading to correlated errors that are induced solely by muons and separate the contributions of muons and γ-rays. We further investigate the dynamical process of QP burst and the impact of QP trapping on correlated errors and particle detection. The proposed method, which monitors multiqubit simultaneous charge-parity jumps, has high sensitivity to QP bursts and may find applications for the detection of cosmic-ray particles, low-mass dark matter, and far-infrared photons.

Nature CommunicationsVol. 16(1)
Nanjing Normal University (CN), Chinese Academy of Sciences (CN), Hefei University (CN), Institute of High Energy Physics (AT), Institute of High Energy Physics (CN), Beijing Academy of Quantum Information Sciences (CN), Institute of Physics (CN), University of Chinese Academy of Sciences (CN)
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Quantum Computing Algorithms and Architecture
34.73
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