钻石
氮空位中心
激发态
磁强计
原子物理学
空位缺陷
激发
激光器
极化(电化学)
量子传感器
材料科学
物理
量子
化学
凝聚态物理
磁场
光学
量子技术
物理化学
复合材料
开放量子系统
量子力学
作者
Felix M. Stürner,Yan Liu,Pierre-Olivier Colard,Matthew Markham,Fedor Jelezko
摘要
So far most well-established quantum sensing techniques based on the negatively charged nitrogen-vacancy (NV) center in diamond utilize the recorded fluorescence intensity to detect the electronic spin states. However, the fluorescence intensity of a NV center is not only dependent on its spin state, but also affected by measurement issues, such as fluctuations of the excitation laser power and charge state transformation of the NV center. Instabilities in terms of output power or polarization changes in the laser source as well as sample drifts during a measurement are common factors that weaken the precision. Here, we demonstrate proof-of-principle of a sensing method making use of the excited-state lifetimes of a NV center for magnetometry experiments.
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