论文标题
记者旋转辅助T1松弛计
Reporter-spin-assisted T1 relaxometry
论文作者
论文摘要
单个自旋量子传感器可以通过对传感器自旋弛豫时间的影响进行定量检测和图像波动的电磁场，从而揭示有关目标固态或分子结构的重要信息。但是，自旋松弛时间计的灵敏度和空间分辨率通常受传感器和目标之间的距离的限制。在这里，我们提出了一种替代方法，该方法与单个自旋传感器（钻石氮空位（NV）中心）一起利用辅助记者自旋。我们表明，这种方法可以实现10^4的测量速度改善现实工作条件，并且我们通过单个浅NV中心实验验证了所提出的方法。我们的工作为一系列可能的自旋系统开辟了一条广泛的探究途径，这些系统可以用作放松传感器，而无需光学初始化和读出功能。
A single spin quantum sensor can quantitatively detect and image fluctuating electromagnetic fields via their effect on the sensor spin's relaxation time, thus revealing important information about the target solid-state or molecular structures. However, the sensitivity and spatial resolution of spin relaxometry are often limited by the distance between the sensor and target. Here, we propose an alternative approach that leverages an auxiliary reporter spin in conjunction with a single spin sensor, a diamond nitrogen vacancy (NV) center. We show that this approach can realize a 10^4 measurement speed improvement for realistic working conditions and we experimentally verify the proposed method using a single shallow NV center. Our work opens up a broad path of inquiry into a range of possible spin systems that can serve as relaxation sensors without the need for optical initialization and readout capabilities.
