首页|Vector magnetometry in zero bias magnetic field using nitrogen-vacancy ensembles

Vector magnetometry in zero bias magnetic field using nitrogen-vacancy ensembles

扫码查看
原文链接
  • 万方数据
  • 维普
The application of the vector magnetometry based on nitrogen-vacancy(NV)ensembles has been widely investigated in multiple areas.It has the superiority of high sensitivity and high stability in ambient conditions with microscale spatial resolution.However,a bias magnetic field is necessary to fully separate the resonance lines of optically detected magnetic resonance(ODMR)spectrum of NV ensembles.This brings disturbances in samples being detected and limits the range of application.Here,we demonstrate a method of vector magnetometry in zero bias magnetic field using NV ensembles.By utilizing the anisotropy property of fluorescence excited from NV centers,we analyzed the ODMR spectrum of NV ensembles under various polarized angles of excitation laser in zero bias magnetic field with a quantitative numerical model and reconstructed the magnetic field vector.The minimum magnetic field modulus that can be resolved accurately is down to～0.64 G theoretically depending on the ODMR spectral line width(1.8 MHz),and～2 G experimentally due to noises in fluorescence signals and errors in calibration.By using 13C purified and low nitrogen concentration diamond combined with improving calibration of unknown parameters,the ODMR spectral line width can be further decreased below 0.5 MHz,corresponding to～0.18 G minimum resolvable magnetic field modulus.

vector magnetometryNV ensemblesoptically detected magnetic resonance(ODMR)zero bias magnetic field

李春兴、石发展、周经纬、王鹏飞

展开 >

CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China

CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China

Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China

National Key R&D Program of ChinaNational Key R&D Program of ChinaChinese Academy of SciencesChinese Academy of SciencesInnovation Program for Quantum Science and TechnologyAnhui Initiative in Quantum Information Technologies,USTC Tang ScholarFundamental Research Funds for the Central Universities

2021YFB32028002023YF0718400ZDZBGCH2021002GJJSTD202000012021ZD0303204

2024

10.1088/1674-1056/ad73af

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(10)