论文标题
电子诱导的纳米级核自旋松弛通过超极化注射探测
Electron induced nanoscale nuclear spin relaxation probed by hyperpolarization injection
论文作者
论文摘要
我们报告了实验，这些实验量化了中央电子自旋作为核自旋在其纳米级环境中的松弛源的作用。我们的策略利用了电子超极化注射，作为可以控制探测浴室中越来越多的核自旋的一种手段，然后以高保真度对它们进行审问。我们的实验集中在氮空位（NV）中心电子旋转的模型系统上，该模型被数百个13C核自旋所包围。我们观察到，13C横向自旋松弛时间随着超极化注射的程度有显着变化，从而可以测量电子介导的弛豫的影响，并在几个纳米上延伸。这些结果提出了有趣的新方法，可以在纳米级环境中空间区分核自旋，并与动态核极化和量子传感器以及由超极化核构建的记忆直接相关。
We report on experiments that quantify the role of a central electronic spin as a relaxation source for nuclear spins in its nanoscale environment. Our strategy exploits hyperpolarization injection from the electron as a means to controllably probe an increasing number of nuclear spins in the bath, and subsequently interrogate them with high fidelity. Our experiments are focused on a model system of a nitrogen vacancy (NV) center electronic spin surrounded by several hundred 13C nuclear spins. We observe that the 13C transverse spin relaxation times vary significantly with the extent of hyperpolarization injection, allowing the ability to measure the influence of electron mediated relaxation extending over several nanometers. These results suggest interesting new means to spatially discriminate nuclear spins in a nanoscale environment, and have direct relevance to dynamic nuclear polarization and quantum sensors and memories constructed from hyperpolarized nuclei.
