Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond

K. Jensen; N. Leefer; A. Jarmola; Y. Dumeige; V. M. Acosta; P. Kehayias; B. Patton; D. Budker

doi:10.1103/PhysRevLett.112.160802

Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond

Quantum Physics 2015-06-18 v1

Authors: K. Jensen , N. Leefer , A. Jarmola , Y. Dumeige , V. M. Acosta , P. Kehayias , B. Patton , D. Budker

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Abstract

We demonstrate a cavity-enhanced room-temperature magnetic field sensor based on nitrogen-vacancy centers in diamond. Magnetic resonance is detected using absorption of light resonant with the 1042 nm spin-singlet transition. The diamond is placed in an external optical cavity to enhance the absorption, and significant absorption is observed even at room temperature. We demonstrate a magnetic field sensitivity of 2.5 nT/sqrt(Hz), and project a photon shot-noise-limited sensitivity of 70 pT/sqrt(Hz) for a few mW of infrared light, and a quantum projection-noise-limited sensitivity of 250 fT/sqrt(Hz) for the sensing volume of 90 um x 90 um 200 um.

Keywords

nitrogen-vacancy centers in diamond color centers in diamond cryogenics

Cite

@article{arxiv.1401.2438,
  title  = {Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond},
  author = {K. Jensen and N. Leefer and A. Jarmola and Y. Dumeige and V. M. Acosta and P. Kehayias and B. Patton and D. Budker},
  journal= {arXiv preprint arXiv:1401.2438},
  year   = {2015}
}

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main text 5 pages, supplementary material 3 pages

Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond

Abstract

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