论文标题
在115 GHz和4.2 Tesla处进行NV检测的ESR光谱的演示
Demonstration of NV-detected ESR spectroscopy at 115 GHz and 4.2 Tesla
论文作者
论文摘要
高频电子自旋谐振（ESR）光谱是用于识别和表征自旋系统的宝贵工具。使用氮气胶囊（NV）中心的纳米级ESR已被证明至单个自旋水平。然而，在低磁场上仅研究了NV检测的ESR，在低磁场上，光谱重叠可防止对光谱特征的清晰识别。在这项工作中，我们证明了NV检测到的ESR测量值的NV Larmor频率为115 GHz的钻石中的单物体氮杂质，以及4.2 Tesla的相应磁场。 NV-ESR测量结果利用双电子 - 电子共振序列，并使用集合和单个NV自旋系统进行。在单个NV实验中，CHIRP脉冲用于改善种群转移和NV-ESR测量。这项工作为基于NV的ESR测量在高磁场上的基础提供了基础。
High frequency electron spin resonance (ESR) spectroscopy is an invaluable tool for identification and characterization of spin systems. Nanoscale ESR using the nitrogen-vacancy (NV) center has been demonstrated down to the level of a single spin. However, NV-detected ESR has exclusively been studied at low magnetic fields, where spectral overlap prevents clear identification of spectral features. Within this work, we demonstrate NV-detected ESR measurements of single-substitutional nitrogen impurities in diamond at a NV Larmor frequency of 115 GHz and the corresponding magnetic field of 4.2 Tesla. The NV-ESR measurements utilize a double electron-electron resonance sequence and are performed using both ensemble and single NV spin systems. In the single NV experiment, chirp pulses are used to improve the population transfer and for NV-ESR measurements. This work provides the basis for NV-based ESR measurements of external spins at high magnetic fields.
