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arXiv 1003.3699quant-phcond-mat.mes-hall
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最佳动态解耦法超灵敏金刚石磁测

Ultra-sensitive Diamond Magnetometry Using Optimal Dynamic Decoupling

Liam T. Hall, Charles D. Hill, Jared H. Cole, Lloyd C. L. Hollenberg

摘要:

近年来,基于金刚石中氮空位(NV)缺陷的新型磁测量技术作为探测纳米尺度磁环境的一种手段受到了广泛关注。单个NV磁力计的灵敏度主要由横向自旋弛豫时间$T_2$确定。目前提高灵敏度的方法采用以空间分辨率为代价的具有高NV密度的晶体,或者通过制造新的同位素纯金刚石晶体来扩展$T_2$。我们采用了一种互补的方法,其中最佳的动态解耦技术延长了自相关时间的自旋浴的相干时间。这表明单自旋,室温磁强计灵敏度低至5“,pT”,Hz $^{-1/2}$与当前技术。

英文摘要:

New magnetometry techniques based on Nitrogen Vacancy (NV) defects in diamond have received much attention of late as a means to probe nanoscale magnetic environments. The sensitivity of a single NV magnetometer is primarily determined by the transverse spin relaxation time, $T_2$. Current approaches to improving the sensitivity employ crystals with a high NV density at the cost of spatial resolution, or extend $T_2$ via the manufacture of novel isotopically pure diamond crystals. We adopt a complementary approach, in which optimal dynamic decoupling techniques extend coherence times out to the self-correlation time of the spin bath. This suggests single spin, room temperature magnetometer sensitivities as low as 5\,pT\,Hz$^{-1/2}$ with current technology.

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。

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