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Wavelet-based fast time-resolved magnetic sensing with electronic spins in diamond

Nanyang Xu, Fengjian Jiang, Yu Tian, Jianfeng Ye, Fazhan Shi, Haijiang Lv, Ya Wang, Jörg Wrachtrup, and Jiangfeng Du
Phys. Rev. B 93, 161117(R) – Published 29 April 2016
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Abstract

Time-resolved magnetic sensing is of great importance from fundamental studies to applications in physical and biological sciences. Recently, the nitrogen-vacancy defect center in diamond has been developed as a promising sensor of magnetic fields under ambient conditions. However, methods to reconstruct time-resolved magnetic fields with high sensitivity are not yet fully developed. Here, we propose and demonstrate a sensing method based on spin echo and Haar wavelet transformation. Our method is exponentially faster in reconstructing time-resolved magnetic fields with comparable sensitivity than existing methods. It is also easier to implement in experiments. Furthermore, the wavelet's unique features enable our method to extract information from the whole signal with only part of the measuring sequences. We then explore this feature for a fast detection of simulated nerve impulses. These results will be useful to time-resolved magnetic sensing with quantum probes at nanoscale.

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  • Received 22 December 2015
  • Revised 11 April 2016

DOI:https://doi.org/10.1103/PhysRevB.93.161117

©2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Nanyang Xu1,*, Fengjian Jiang2, Yu Tian1, Jianfeng Ye2, Fazhan Shi3, Haijiang Lv2,†, Ya Wang4,‡, Jörg Wrachtrup4, and Jiangfeng Du3

  • 1School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui 230009, China
  • 2School of Information Engineering, Huangshan University, Huangshan, Anhui 245041, China
  • 3Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
  • 43. Physikalisches Institut, Research Center SCOPE, and MPI for Solid State Research, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

  • *nyxu@ustc.edu.cn
  • luhj9404@mail.ustc.edu.cn
  • wangya837@gmail.com

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Issue

Vol. 93, Iss. 16 — 15 April 2016

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