论文标题
纳米座中单个NV中心T1自旋松弛的温度依赖性
Temperature-dependence of T1 spin relaxation of single NV centers in nanodiamonds
论文作者
论文摘要
我们报告了纵向自旋松弛时间温度依赖性的实验研究$ t_1 $ t_1 $的单氮 - 胶囊（NV）中心。为了确定危险中的放松机制，在房间和低温温度下，对$ t_1 $放松时间的测量进行了测量。结果与温度依赖性的松弛过程一致，该过程归因于纳米座表面上的顺磁杂质产生的热激活的磁噪声。这些结果证实了在纳米座中发生的表面诱导的自旋松弛过程的存在，这与基于敏感的纳米级NV量子传感器的未来发展有关。
We report the experimental study of the temperature-dependence of the longitudinal spin relaxation time $T_1$ of single Nitrogen-Vacancy (NV) centers hosted in nanodiamonds. To determine the relaxation mechanisms at stake, measurements of the $T_1$ relaxation time are performed for a set of individual NV centers both at room and cryogenic temperatures. The results are consistant with a temperature-dependent relaxation process which is attributed to a thermally-activated magnetic noise produced by paramagnetic impurities lying on the nanodiamond surface. These results confirm the existence of surface-induced spin relaxation processes occurring in nanodiamonds, which are relevant for future developments of sensitive nanoscale NV-based quantum sensors.
