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arXiv 1112.5502quant-ph
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金刚石基单分子磁共振波谱

Diamond based single molecule magnetic resonance spectroscopy

Jianming Cai, Fedor Jelezko, Martin B. Plenio, Alex Retzker

摘要:

检测单个分子中的核自旋是物理学和生物学中的一个关键挑战,多年来一直在寻求解决方案。单个原子核的小磁矩和不可避免的环境噪声是其实现的关键障碍。在这里,我们从理论上证明,一个单一的氮空位(NV)在金刚石中心可以用来构建一个纳米级的单分子光谱仪,能够检测一个单一的核的位置和自旋状态,并可以确定的距离和对齐的核或电子自旋对。所提出的装置将在化学和生物学中的单分子光谱学中找到应用,例如在确定蛋白质结构或监测大分子运动中,并且因此可以提供一种工具来帮助解开生物分子功能的微观机制。

英文摘要:

The detection of a nuclear spin in an individual molecule represents a key challenge in physics and biology whose solution has been pursued for many years. The small magnetic moment of a single nucleus and the unavoidable environmental noise present the key obstacles for its realization. Here, we demonstrate theoretically that a single nitrogen-vacancy (NV) center in diamond can be used to construct a nano-scale single molecule spectrometer that is capable of detecting the position and spin state of a single nucleus and can determine the distance and alignment of a nuclear or electron spin pair. The proposed device will find applications in single molecule spectroscopy in chemistry and biology, such as in determining protein structure or monitoring macromolecular motions and can thus provide a tool to help unravelling the microscopic mechanisms underlying bio-molecular function.

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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