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Miniature Cavity-Enhanced Diamond Magnetometer

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

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Georgios Chatzidrosos

Arne Wickenbrock

Lykourgos Bougas

Nathan Leefer

Teng Wu

Kasper Jensen

Yannick Dumeige

Dmitry Budker


© 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.

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
Public URL
Publisher URL


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