Data underlying the publication "Improved Electron-Nuclear Quantum Gates for Spin Sensing and Control"

The ability to sense and control nuclear spins near solid-state defects might enable a range of quantum technologies. Dynamically Decoupled Radio-Frequency (DDRF) control offers a high degree of design flexibility and long electron-spin coherence times. However, previous studies considered simplified models and little is known about optimal gate design and fundamental limits. Here, we develop a generalised DDRF framework that has important implications for spin sensing and control. Our analytical model, which we corroborate by experiments on a single NV center in diamond, reveals the mechanisms that govern the selectivity of gates and their effective Rabi frequencies, and enables flexible detuned gate designs. We apply these insights to numerically show a 60x sensitivity enhancement for detecting weakly coupled spins and study the optimisation of quantum gates in multi-qubit registers. These results advance the understanding for a broad class of gates and provide a toolbox for application-specific design, enabling improved quantum control and sensing.<br>This server contains the data and jupyter notebooks to reproduce the figures (see README file for instructions). Execute the notebook files (.ipynb extension) via an iPython environment. These will load the data from the .json and .npy data files to recreate the figures.<br>

固态缺陷附近核自旋的感知与操控能力，有望推动一系列量子技术的发展。动态解耦射频（Dynamically Decoupled Radio-Frequency, DDRF）操控技术具备极高的设计灵活性，且可延长电子自旋相干时长。然而，过往研究多采用简化模型，目前对最优量子门设计与基础极限的认知仍较为有限。本研究提出一种广义DDRF框架，该框架对自旋感知与操控具有重要意义。我们通过金刚石中单氮空位（NV）中心的实验验证了所提出的解析模型，该模型揭示了调控量子门选择性与有效拉比频率的内在机制，并支持灵活的失谐量子门设计。我们将这些理论见解应用于数值模拟，实现了弱耦合自旋探测灵敏度60倍的提升，并研究了多量子比特寄存器中的量子门优化问题。本研究成果深化了对广泛类别量子门的认知，为面向特定应用的设计提供了工具箱，有望实现更优异的量子操控与感知性能。
本服务器包含用于复现图表的数据集与Jupyter Notebook文件，操作说明详见README文件。请在IPython环境中运行扩展名为.ipynb的Notebook文件，此类文件将从.json与.npy数据文件中加载数据以复现图表。