论文标题
纳米级电场成像基于量子传感器及其在环境条件下的电荷状态控制
Nanoscale electric-field imaging based on a quantum sensor and its charge-state control under ambient condition
论文作者
论文摘要
钻石中的氮呈（NV）中心可以用作用纳米级分辨率对磁场进行成像的量子传感器。但是，到目前为止，纳米级电场映射尚未实现，因为NV和电场之间的耦合强度相对较弱。使用单个浅NV，我们在这里成功地对电场的轮廓进行定量成像，从基于QPLU的原子力显微镜（AFM）的尖端尖端，并实现了〜10 nm的空间分辨率。通过这样的当地电场，我们证明了对NV电荷状态的电气控制，其精度低于5 nm。这项工作代表了基于单个量子传感器的纳米级扫描电量法的第一步，并可能在纳米级的各种功能材料中定量绘制局部电荷，电动极化和介电响应的新可能性。
Nitrogen-vacancy (NV) centers in diamond can be used as quantum sensors to image the magnetic field with nanoscale resolution. However, nanoscale electric-field mapping has not been achieved so far because of the relatively weak coupling strength between NV and electric field. Using individual shallow NVs, here we succeeded to quantitatively image the contours of electric field from a sharp tip of a qPlus-based atomic force microscope (AFM), and achieved a spatial resolution of ~10 nm. Through such local electric fields, we demonstrated electric control of NV's charge state with sub-5 nm precision. This work represents the first step towards nanoscale scanning electrometry based on a single quantum sensor and may open up new possibility of quantitatively mapping local charge, electric polarization, and dielectric response in a broad spectrum of functional materials at nanoscale.
