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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.

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


Authors

K. Jensen

N. Leefer

A. Jarmola

Y. Dumeige

V.?M. Acosta

P. Kehayias

B. Patton

D. Budker



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.

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

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