论文标题
纳米级的纳米纳特斯拉敏感性，单个自旋
Sub-nanotesla Sensitivity at the Nanoscale with a Single Spin
论文作者
论文摘要
在许多磁场中，微观磁场的高敏性检测至关重要。良好的灵敏度和高空间分辨率在测量中相互矛盾，这是通过能量分辨率极限（ERL）量化的。在这里，我们报告说，纳米级的0.5 $ {\ bf {\ bf {nt/\ sqrt {hz}}} $通过在钻石中使用氮气中的氮缺陷来实现纳米级的敏感性，并实现具有纳米含量深度的钻石。通过与多种量子技术集成，包括实时反馈初始化，与形状脉冲的动态解耦，通过量子逻辑进行重复读数，从而大大提高了所达到的灵敏度。我们的磁性传感器将为搜索标准模型以外的新物理，研究凝结物中的微观磁现象以及在细胞尺度上检测生命活动的新灯。
High-sensitivity detection of microscopic magnetic field is essential in many fields. Good sensitivity and high spatial resolution are mutually contradictory in measurement, which is quantified by the energy resolution limit (ERL). Here we report that a sensitivity of 0.5 ${\bf{nT/\sqrt{Hz}}}$ at the nanoscale is achieved experimentally by using nitrogen-vacancy defects in diamond with depths of tens of nanometers. The achieved sensitivity is substantially enhanced by integrating with multiple quantum techniques, including real-time-feedback initialization, dynamical decoupling with shaped pulses, repetitive readout via quantum logic. Our magnetic sensors will shed new light on searching new physics beyond the standard model, investigating microscopic magnetic phenomena in condensed matters, and detection of life activities at the sub-cellular scale.
