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

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

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 2.5nT/Hz, and project a photon shot-noise-limited sensitivity of 70pT/Hz for a few mW of infrared light, and a quantum projection-noise-limited sensitivity of 250fT/Hz for the sensing volume of ∼90μm×90μm×200μm. © 2014 American Physical Society.

Citation

Jensen, K., Leefer, N., Jarmola, A., Dumeige, Y., Acosta, V., Kehayias, P., …Budker, D. (2014). Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond. Physical Review Letters, 112(16), 160802. https://doi.org/10.1103/PhysRevLett.112.160802

• Journal Article Type: Article
• Acceptance Date: Mar 13, 2014
• Publication Date: Apr 25, 2014
• Deposit Date: Dec 6, 2018
• Publicly Available Date: Dec 21, 2018
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 112
• Issue: 16
• Pages: 160802
• DOI: https://doi.org/10.1103/PhysRevLett.112.160802
• Public URL: https://link.aps.org/doi/10.1103/PhysRevLett.112.160802