Hyperfine Dependence of Nuclear-Spin Rabi Frequencies in Silicon Donors

Nuclear-spin qubits in donor systems have emerged as promising platforms for quantum computing. Here, we demonstrate individual, high-fidelity coherent control of four phosphorus nuclear spins in a silicon donor cluster, where each nucleus is coupled to a central electron via a distinct hyperfine interaction. We investigate theoretically and experimentally how hyperfine interactions modulate nuclear Rabi frequencies under different electron-spin states. By calibrating the driving magnetic field using the ionized bare nucleus as an in situ atomic-scale sensor, we validate the theoretical model and find excellent agreement with the experiment. These results highlight the role of hyperfine interactions in nuclear-spin control and provide a new perspective for designing fast, high-fidelity, single-qubit gates in donor-based quantum processors.

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Publication Details

Journal
Nano Letters
Published
2026-02-05
DOI
https://doi.org/10.1021/acs.nanolett.5c05023
Primary Topic
Quantum and electron transport phenomena
Type
article
Field-Weighted Citation Impact
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article

Hyperfine Dependence of Nuclear-Spin Rabi Frequencies in Silicon Donors

Dapeng Yu, Chang Li, Guanyong Wang, Kai Yi Wu et al.
Nano Letters
Quantum and electron transport phenomena
article

Hyperfine Dependence of Nuclear-Spin Rabi Frequencies in Silicon Donors

Dapeng Yu, Chang Li, Guanyong Wang, Kai Yi Wu, Yu He, Keji Shi, Chunming Yin, Yi Deng, Yu-Ning Zhang, Song Liu, Shu Huan, Shihang Zhang, Meiling Duan, Peihao Huang, Xuesong Bai, Tianluo Pan, Jiaze Liu, Miao Gao, Tao Xin, Yu He, Hao Wang, Zhen Tian
article en

Abstract

Nuclear-spin qubits in donor systems have emerged as promising platforms for quantum computing. Here, we demonstrate individual, high-fidelity coherent control of four phosphorus nuclear spins in a silicon donor cluster, where each nucleus is coupled to a central electron via a distinct hyperfine interaction. We investigate theoretically and experimentally how hyperfine interactions modulate nuclear Rabi frequencies under different electron-spin states. By calibrating the driving magnetic field using the ionized bare nucleus as an in situ atomic-scale sensor, we validate the theoretical model and find excellent agreement with the experiment. These results highlight the role of hyperfine interactions in nuclear-spin control and provide a new perspective for designing fast, high-fidelity, single-qubit gates in donor-based quantum processors.

Nano LettersVol. 26(6)
University of Science and Technology of China (CN), Southern University of Science and Technology (CN), Hefei University (CN), Quantum (Australia) (AU), Hefei National Center for Physical Sciences at Nanoscale (CN), Microscale (United States) (US)
Openalex Percentile: Top 63%
Quantum and electron transport phenomena
DOISourceOpenAlex
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