Detection and Polarization of Nuclear and Electron Spins using Nitrogen-Vacancy Centers
Detection and Polarization of Nuclear and Electron Spins using Nitrogen-Vacancy Centers
复制标题
使用氮空位中心检测和极化核和电子自旋
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
C. Avalos
中科院分区：
文献类型：
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作者：
C. Avalos
作者：Avalos，Claudia Esther|顾问：Pines，亚历山大|摘要：磁共振波谱是获得分子结构详细信息的最有力的光谱工具之一。它也是探索大自旋系综中有趣量子现象的一个重要工具。在这篇论文中，我们提出的NV-中心，金刚石中的点缺陷，已经获得了臭名昭著的磁共振社区，由于其有趣的和有用的自旋特性的光学检测磁共振的调查。在过去的几年里，NV中心已被用作陀螺仪，用于研究薄超导膜的磁传感器，最近，作为纳米磁共振测量的磁力计。在这项工作中，我们探讨了光学检测的磁共振的NV中心在一些不同的情况下。在第五章和第六章中，我们研究了NV-中心的相干寿命，发现了一种探测固态核四极相互作用的新方法。在第七章中，我们通过对交叉弛豫效应的观测，得到了NV-中心附近缺陷中心的详细化学信息。在第八章中，我们找到了一种灵敏地控制金刚石晶格中NV$^-$中心附近核自旋极化的方法。在第9章和第10章中，我们使用NV$^-$中心的系综来探测金刚石晶格外部的小磁场。
Author(s): Avalos, Claudia Esther | Advisor(s): Pines, Alexander | Abstract: Magnetic resonance spectroscopy is one of the most powerful spectroscopic tools for obtaining detailed information about molecular structure. It has also served as a remarkable tool for exploring interesting quantum phenomena in large spin ensembles. In this dissertation, we present investigations of the optically detected magnetic resonance of the NV- center, a point defect in diamond that has gained notoriety in the magnetic resonance community due to its interesting and useful spin properties. In the past few years, the NV- center has been used as a gyroscope, a magnetic sensor for investigating thin superconducting films and most recently, as a magnetometer for nanoscale magnetic resonance measurements. In this work, we explore the optically detected magnetic resonance of the NV- center in a number of different contexts. In chapter 5 and 6 we investigate the coherence lifetime of the NV- center and discover a novel method for probing nuclear quadrupolar interactions in the solid state. In chapter 7 we obtain detailed chemical information about defect centers neighboring the NV- center via observation of cross-relaxation effects. In chapter 8 we find a method to sensitively control the polarization of nuclear spins neighboring the NV$^-$ center in the diamond lattice. And in chapters 9 and 10 we use an ensemble of NV$^-$ centers to probe small magnetic fields external to the diamond lattice.