arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.12233physics.app-phquant-ph
收藏

一种高灵敏度的表面涂层光纤耦合金刚石磁强计

A high-sensitivity fiber-coupled diamond magnetometer with surface coating

Shao-Chun Zhang, Hao-Bin Lin, Yang Dong, Bo Du, Xue-Dong Gao, Cui Yu, Zhi-Hong Feng, Xiang-Dong Chen, Guang-Can Guo, Fang-Wen Sun

摘要:

金刚石中的氮空位量子缺陷由于其显著的光学和自旋性质,为磁测量提供了一个很有前途的平台。在这封信中,我们提出了一个高灵敏度和宽带宽的光纤为基础的量子磁强计的实际应用。通过在金刚石表面镀上银反射膜,提高了荧光的收集效率和激发效率。此外,跟踪脉冲光学检测的磁共振谱允许$35$ pT $/\sqrt{\rm{Hz}}$的磁场灵敏度和$4.1$ KHz的带宽。最后,利用该磁力计成功地绘制了载流铜丝网的磁场分布图。这种稳定而紧凑的磁测量方法可以在物理、化学和生物学研究的许多领域提供强有力的工具。

英文摘要:

Nitrogen-vacancy quantum defects in diamond offer a promising platform for magnetometry because of their remarkable optical and spin properties. In this Letter, we present a high-sensitivity and wide-bandwidth fiber-based quantum magnetometer for practical applications. By coating the diamond surface with silver reflective film, both the fluorescence collection and excitation efficiency are enhanced. Additionally, tracking pulsed optically detected magnetic resonance spectrum allowed a magnetic field sensitivity of $35$ pT$/\sqrt{\rm{Hz}}$ and a bandwidth of $4.1$ KHz. Finally, this magnetometer was successfully applied to map the magnetic field induced by the current-carrying copper-wire mesh. Such a stable and compact magnetometry can provide a powerful tool in many areas of physical, chemical, and biological researches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑