arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.12807quant-phcond-mat.mes-hallphysics.optics
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金刚石中NV心电荷态的磁场辅助谱分解与成像

Magnetic field-assisted spectral decomposition and imaging of charge states of NV centers in diamond

T. Chakraborty, R. Bhattacharya, V. S. Anjusha, M. Nesladek, D. Suter, T. S. Mahesh

摘要:

随着量子技术的发展,金刚石中的氮空位($NV$)中心成为量子计算、量子通讯和量子传感应用的前沿研究领域。由于$NV$系统的耦合的自旋-电荷动力学,关于$NV$电荷状态动力学的知识可以帮助策略性地制定有效的自旋控制序列。通过这篇论文,我们报告了两种基于光谱的反卷积方法来创建金刚石中$NV$中心系综的电荷态映射图像。首先,依赖于一个离轴的外部磁场混合的电子自旋和选择性地修改的光致发光(PL)的$NV^-$的事实,我们执行的光谱分解的一个合奏的$NV$ s和提取的光谱$NV^-$和$NV^0$状态。接下来,我们介绍了一种基于光学滤波器的分解协议,并执行PL成像的$NV^-$和$NV^0$。较早获得的$NV^-$和$NV^0$状态的光谱用于计算它们通过长通滤光器的透射率。这些结果有助于我们确定金刚石样品中$NV$电荷态的空间分布。

英文摘要:

With the advent of quantum technology, nitrogen vacancy ($NV$) centers in diamond turn out to be a frontier which provides an efficient platform for quantum computation, communication and sensing applications. Due to the coupled spin-charge dynamics of the $NV$ system, knowledge about $NV$ charge state dynamics can help to formulate efficient spin control sequences strategically. Through this paper we report two spectroscopy-based deconvolution methods to create charge state mapping images of ensembles of $NV$ centers in diamond. First, relying on the fact that an off axis external magnetic field mixes the electronic spins and selectively modifies the photoluminescence (PL) of $NV^-$, we perform decomposition of the optical spectrum for an ensemble of $NV$s and extract the spectra for $NV^-$ and $NV^0$ states. Next, we introduce an optical filter based decomposition protocol and perform PL imaging for $NV^-$ and $NV^0$. Earlier obtained spectra for $NV^-$ and $NV^0$ states are used to calculate their transmissivities through a long pass optical filter. These results help us to determine the spatial distribution of the $NV$ charge states in a diamond sample.

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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