论文标题
带有单个氮气视口中心的零场的磁传感
Magnetic sensing at zero field with a single nitrogen-vacancy center
论文作者
论文摘要
单氮散布（NV）中心被广泛用作磁场和电场，应变和温度的纳米级传感器。使用NV中心的纳米级磁力测定法可以定量测量超导体中涡流产生的局部磁场，拓扑自旋纹理，例如天空质量以及检测核磁共振信号。但是，当用作磁场传感器时，一个缺点是需要外部偏置场才能用NV中心执行磁力测定法。在这项工作中，我们演示了一种技术，该技术允许访问不需要外部偏置字段的制度。这实现了新的应用程序，其中该偏见领域可能会干扰正在调查的系统。此外，我们表明我们的技术足够敏感，可以检测到钻石外的旋转，这使纳米级零级至超田间核磁共振共振。
Single nitrogen-vacancy (NV) centers are widely used as nanoscale sensors for magnetic and electric fields, strain and temperature. Nanoscale magnetometry using NV centers allows for example to quantitatively measure local magnetic fields produced by vortices in superconductors, topological spin textures such as skyrmions, as well as to detect nuclear magnetic resonance signals. However one drawback when used as magnetic field sensor has been that an external bias field is required to perform magnetometry with NV centers. In this work we demonstrate a technique which allows access to a regime where no external bias field is needed. This enables new applications in which this bias field might disturb the system under investigation. Furthermore, we show that our technique is sensitive enough to detect spins outside of the diamond which enables nanoscale zero- to ultralow-field nuclear magnetic resonance.
