Sub-nanotesla magnetometry with a fibre-coupled diamond sensor

Patel, R. L.; Zhou, L. Q.; Frangeskou, A. C.; Stimpson, G. A.; Breeze, B. G.; Nikitin, A.; Dale, M. W.; Nichols, E. C.; Thornley, W.; Green, B. L.; Newton, M. E.; Edmonds, A. M.; Markham, M. L.; Twitchen, D. J.; Morley, G. W.

doi:10.48550/arxiv.2002.08255

Cited by 1 publication

(1 citation statement)

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“…Based on different approaches, recent works have focused on the development of prototypes that can enable the NV centers for industrial product applications. [17] [18] [19] [20] [21] [22] Here, we demonstrate a fiber-integrated magnetometer based on NV centers in diamond. The compact design of the magnetic field sensor was achieved by using a single-mode fiber for the optical initialization of the NV centers and deploying a balanced detection scheme built up by two photodiodes positioned close to the diamond.…”

Section: Introductionmentioning

confidence: 99%

Integrated and Portable Magnetometer Based on Nitrogen‐Vacancy Ensembles in Diamond

et al. 2021

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Magnetic field sensors that exploit quantum effects have shown that they can outperform classical sensors in terms of sensitivity enabling a range of novel applications in future, such as a brain machine interface. Negatively charged nitrogen-vacancy (NV) centers in diamond have emerged as a promising high sensitivity platform for measuring magnetic fields at room temperature. Transferring this technology from laboratory setups into products and applications, the total size of the sensor, the overall power consumption, and the costs need to be reduced and optimized. Here, a fiber-based NV magnetometer featuring a complete integration of all functional components is demonstrated without using any bulky laboratory equipment. This integrated prototype allows portable measurement of magnetic fields with a sensitivity of 344 pT Hz −1/2 .

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