Benchmark for Synthesized Diamond Sensors Based on Isotopically Engineered Nitrogen‐Vacancy Spin Ensembles for Magnetometry Applications
Benchmark for Synthesized Diamond Sensors Based on Isotopically Engineered Nitrogen‐Vacancy Spin Ensembles for Magnetometry Applications
复制标题
基于同位素工程氮空位自旋系综的合成金刚石传感器基准，用于磁力测量应用
DOI：
10.1002/qute.202000074
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发表时间：
2020
影响因子：
4.4
通讯作者：
F. Jelezko,
中科院分区：
文献类型：
--
作者：
C. Osterkamp;P. Balasubramanian;G. Wolff;T. Teraji;M. Nesladek;F. Jelezko,
人造金刚石中的氮空位(NV)中心系综是一种很有前途的新兴量子传感平台。这种基于固态的量子传感器的实现得到了广泛的研究，并且需要可重复地制造具有受控自旋属性的NV中心，包括金刚石晶体中的自旋池环境。在这里，报告了一种非侵入性的方法来基准NV系综，以确定它们作为超敏感磁场传感器的适用性。提出了成像和电子自旋共振技术，以确定操作参数和精确定义NV驱动的钻石工程的最佳材料。这些方法的功能体现在化学气相沉积合成金刚石层的例子中，所合成的金刚石层包含优先取向的、同位素控制的15NV中心系综。在另外一个富含12C的环境中，对有限的15N P1自旋池进行量化，并通过应用动态去耦合协议来减少其影响，完成了一套建议的NV系综分析标准，并有可能用作磁强计。
Nitrogen‐vacancy (NV) center ensemble in synthetic diamond is a promising and emerging platform for quantum sensing technologies. Realization of such a solid‐state based quantum sensor is widely studied and requires reproducible manufacturing of NV centers with controlled spin properties, including the spin bath environment within the diamond crystal. Here, a non‐invasive method is reported to benchmark NV ensembles regarding their suitability as ultra‐sensitive magnetic field sensors. Imaging and electron spin resonance techniques are presented to determine operating figures and precisely define the optimal material for NV‐driven diamond engineering. The functionality of the methods is manifested on examples of chemical vapor deposition synthesized diamond layers containing preferentially aligned, isotopically controlled15NV center ensembles. Quantification of the limiting15N P1 spin bath, in an otherwise12C enriched environment, and the reduction of its influence by applying dynamical decoupling protocols, complete the suggested set of criteria for the analysis of NV ensemble with potential use as magnetometers.