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Journal of Applied Mathematics and Physics 2023年第11期11卷 3666-3675页

作者： Shuhan Guo Nanyang Girls’ High School Singapore

This paper is a literature review on the operating theory of nv centers and its applications. Extensive material online had been reviewed to provide a comprehensive explanation of nv centers in this literature review.

关键词： nv centers Functions and Applications

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Molecular dynamics simulation study of nitrogen vacancy color centers prepared by carbon ion implantation into diamond

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NANOTECHNOLOGY AND PRECISION ENGINEERING 2024年第3期7卷 71-78页

作者： Zhao, Wei Xu, Zongwei Wang, Pengfei Chen, Hanyi Tianjin Univ State Key Lab Precis Measuring Technol & Instrumen Tianjin 300072 Peoples R China Univ Sci & Technol China Dept Modern Phys Hefei 230026 Peoples R China

Nitrogen vacancy (nv) color centers in diamond have useful applications in quantum sensing and fluorescent marking. They can be generated experimentally by ion implantation, femtosecond lasers, and chemical vapor deposition. However, there is a lack of studies of the yield of nv color centers at the atomic scale. In the molecular dynamics simulations described in this paper, nv color centers are prepared by ion implantation in diamond with pre-doped nitrogen and subsequent annealing. The differences between the yields of nv color centers produced by implantation of carbon (C) and nitrogen (N) ions, respectively, are investigated. It is found that C-ion implantation gives a greater yield of nv color centers and superior location accuracy. The effects of different pre-doping concentrations (400-1500 ppm) and implantation energies (1.0-3.0 keV) on the nv color center yield are analyzed, and it is shown that a pre-doping concentration of 1000 ppm with 2 keV C-ion implantation can produce a 13% yield of nv color centers after 1600 K annealing for 7.4 ns. Finally, a brief comparison of the nv color center identification methods is presented, and it is found that the error rate of an analysis utilizing the identify diamond structure + coordination analysis method is reduced by about 7% compared with conventional identification methods.

关键词： nv color center Ion implantation Molecular dynamics (MD) simulation Yield enhancement nv centers

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A hybrid magnetometer towards femtotesla sensitivity under ambient conditions

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Science Bulletin 2021年第2期66卷 127-132,M0003页

作者： Yijin Xie Huiyao Yu Yunbin Zhu Xi Qin Xing Rong Chang-Kui Duan Jiangfeng Du CAS Key Laboratory of Microscale Magnetic Resonance and Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

Detecting magnetic field is of great importance for many applications,such as magnetoencephalography and underground *** have been many magnetometers being widely used since the age of Hall *** of the magnetometers,the superconducting quantum interference device,is capable of measuring femtotesla magnetic fields at cryogenic ***,a solid-state magnetometer with femtotesla sensitivity under ambient conditions remains *** we present a hybrid magnetometer based on the ensemble nitrogen-vacancy centers in diamond with the sensitivity of(195±60)fT/Hz^(1/2)under ambient conditions,which can be further advanced to 11 fT/Hz^(1/2)at 100 Hz with cutting-edge fabrication *** method will find potential applications in biomagnetism and geomagnetism.

关键词： Diamond magnetometer nv centers Quantum sensing Flux concentrator

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