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Subnanotesla magnetometry with a fiber-coupled diamond sensor

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Patel, R. L., Zhou, L. Q., Frangeskou, Angelo, Stimpson, Guy, Breeze, Ben, Nikitin, A., Dale, M. W., Nichols, E. C., Thornley, W., Green, Ben, Newton, Mark E., Edmonds, A. M., Markham, M. L., Twitchen, D. J. and Morley, Gavin (2020) Subnanotesla magnetometry with a fiber-coupled diamond sensor. Physical Review Applied, 14 . 044058. doi:10.1103/PhysRevApplied.14.044058 ISSN 2331-7019.

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Official URL: https://doi.org/10.1103/PhysRevApplied.14.044058

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Abstract

Nitrogen-vacancy centers (NVCs) in diamond are being explored for future quantum technologies, and in particular ensembles of NVC are the basis for sensitive magnetometers. We present a fiber-coupled NVC magnetometer with an unshielded sensitivity of (310±20)pT/√Hz in the frequency range of 10–150 Hz at room temperature. This takes advantage of low-strain 12C diamond, lenses for fiber coupling and optimization of microwave modulation frequency, modulation amplitude, and power. Fiber coupling means the sensor can be conveniently brought within 2 mm of the object under study.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Magnetic fields, Magnetometers, Magnetic materials -- Microscopy, Photon detectors , Nanophotonics
Journal or Publication Title: Physical Review Applied
Publisher: American Physical Society
ISSN: 2331-7019
Official Date: 30 October 2020
Dates:
DateEvent
30 October 2020Published
14 September 2020Accepted
Volume: 14
Article Number: 044058
DOI: 10.1103/PhysRevApplied.14.044058
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 2 November 2020
Date of first compliant Open Access: 4 November 2020
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/L015315/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
UNSPECIFIEDBruker BioSpinhttp://dx.doi.org/10.13039/100009018
EP/M013243/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/T001062/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
N62909-16-1-2111-P00002Office of Naval Research Globalhttp://dx.doi.org/10.13039/100007297
Undergraduate Research Support SchemeUniversity of Warwickhttp://dx.doi.org/10.13039/501100000741
UNSPECIFIEDRoyal Academy of Engineeringhttp://dx.doi.org/10.13039/501100000287
UNSPECIFIEDRoyal Societyhttp://dx.doi.org/10.13039/501100000288
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