Miniature Cavity-Enhanced Diamond Magnetometer

Chatzidrosos, Georgios; Wickenbrock, Arne; Bougas, Lykourgos; Leefer, Nathan; Wu, Teng; Jensen, Kasper; Dumeige, Yannick; Budker, Dmitry

Abstract

© 2017 American Physical Society. We present a highly sensitive miniaturized cavity-enhanced room-temperature magnetic-field sensor based on nitrogen-vacancy centers in diamond. The magnetic resonance signal is detected by probing absorption on the 1042-nm spin-singlet transition. To improve the absorptive signal the diamond is placed in an optical resonator. The device has a magnetic-field sensitivity of 28 pT/Hz, a projected photon shot-noise-limited sensitivity of 22 pT/Hz, and an estimated quantum projection-noise-limited sensitivity of 0.43 pT/Hz with the sensing volume of ∼390 μm×4500 μm2. The presented miniaturized device is the basis for an endoscopic magnetic-field sensor for biomedical applications.

Citation

Chatzidrosos, G., Wickenbrock, A., Bougas, L., Leefer, N., Wu, T., Jensen, K., …Budker, D. (2017). Miniature Cavity-Enhanced Diamond Magnetometer. Physical Review Applied, 8(4), 1-5. https://doi.org/10.1103/PhysRevApplied.8.044019

• Journal Article Type: Article
• Acceptance Date: Sep 30, 2017
• Online Publication Date: Oct 27, 2017
• Publication Date: Oct 27, 2017
• Deposit Date: Dec 12, 2018
• Publicly Available Date: Jan 11, 2019
• Journal: Physical Review Applied
• Electronic ISSN: 2331-7019
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 8
• Issue: 4
• Article Number: 044019
• Pages: 1-5
• DOI: https://doi.org/10.1103/PhysRevApplied.8.044019
• Public URL: https://nottingham-repository.worktribe.com/output/1369807
• Publisher URL: https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.8.044019