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arXiv · 2101.01986

A pulsed lock-in method for ensemble nitrogen-vacancy center magnetometry

Jixing Zhang·Heng Yuan·Tianzheng Liu·Lixia Xu·Guodong Bian·Pengcheng Fan·Mingxin Li
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Abstract

This article proposes a scheme for nitrogen-vacancy (NV) center magnetometry that combines the advantages of lock-in detection and pulse-type scheme. The optimal conditions, optimal sensitivity, and noise-suppression capability of the proposed method are compared with those of the conventional methods from both theoretical and simulation points of view. Through experimental measurements, a four-time improvement in sensitivity and 60-times improvement in minimum resolvable magnetic field (MRMF) was obtained. By using a confocal experiment setup, proposed scheme achieves a sensitivity of 3 nT/Hz1/2 and a MRMF of 100 pT.

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Jixing Zhang, Heng Yuan, Tianzheng Liu, Lixia Xu, Guodong Bian, Pengcheng Fan, Mingxin Li. 2021-01-06. A pulsed lock-in method for ensemble nitrogen-vacancy center magnetometry. https://arxiv.org/abs/2101.01986

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