We report the first experimental demonstration of stimulated Raman adiabatic passage (STIRAP) in nuclear-spin transitions of 14N within nitrogen-vacancy color centers in diamond. It is shown that the STIRAP technique suppresses the occupation of the intermediate state, which is a crucial factor for improvements in quantum sensing technology. Building on that advantage, we develop and implement a generalized version of the Ramsey interferometric scheme, employing half-STIRAP pulses to perform the necessary quantum-state manipulation with high fidelity. The enhanced robustness of the STIRAP-based Ramsey scheme to variations in the pulse parameters is experimentally demonstrated, showing good agreement with theoretical predictions. Our results pave the way for improving the long-term stability of diamond-based sensors, such as gyroscopes and frequency standards.

中文翻译：

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使用受激拉曼绝热通道对金刚石核自旋进行 Ramsey 干涉测量


我们报道了受激发拉曼绝热通道 （STIRAP） 在金刚石氮空位色中心内 14N 的核自旋跃迁中的首次实验演示。结果表明，STIRAP 技术抑制了中间态的占据，这是量子传感技术改进的关键因素。基于这一优势，我们开发并实施了 Ramsey 干涉测量方案的通用版本，采用半 STIRAP 脉冲以高保真度执行必要的量子态操作。实验证明了基于 STIRAP 的 Ramsey 方案对脉冲参数变化的增强鲁棒性，显示出与理论预测的良好一致性。我们的结果为提高基于金刚石的传感器（如陀螺仪和频率标准）的长期稳定性铺平了道路。