Ultrafast Conversion of Two Charge States of Nitrogen-Vacancy Centers in Diamond via Two-Photon Excitation.

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-10-24 DOI:10.1021/acs.nanolett.5c05150

Zhicheng Su,Mengting Yang,Doudou Sun,Zhaoyi Xue,Yulong Wang,Yuli Lu,Jiqiang Ning,Changcheng Zheng,Junpeng Lu,Shijie Xu,Zhenhua Ni

引用次数: 0

Abstract

Ultrafast conversion dynamics between the NV0 and NV- charge states in diamond is crucial for spin-state manipulation and readout. However, the underlying mechanism of the conversion, including the effective excitation wavelength, the time scales of the conversion, and the influencing factors, is still unclear. Here, we proposed a method to probe the ultrafast conversion of the two charge states via two-photon excitation with femtosecond laser pulses separated by 12.5 ns. We found that the highest conversion efficiency occurs at the excitation wavelength of around 532 nm, and the efficiency increases with temperature as well. The conversion time from NV0 to NV- is obtained to be around 75 ps at 300 K. These findings advance the understanding of NV center charge-state dynamics and provide insights for high-speed spin readout in quantum information applications.

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金刚石中氮空位中心两种电荷态的双光子激发超快转换。

金刚石中NV0和NV电荷态之间的超快转换动力学对于自旋态操纵和读出至关重要。然而，这种转换的潜在机制，包括有效激发波长、转换的时间尺度以及影响因素，目前还不清楚。本文提出了一种利用间隔12.5 ns的飞秒激光脉冲，通过双光子激发来探测两种电荷态的超快转换的方法。我们发现，在532 nm左右的激发波长处转换效率最高，并且效率随温度的升高而升高。在300 K时，从NV0到NV-的转换时间约为75 ps。这些发现促进了对NV中心电荷态动力学的理解，并为量子信息应用中的高速自旋读出提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.