Simultaneous Broadband Vector Magnetometry Using Solid-State Spins
Name
PhysRevApplied.10.034044.pdf
Size
3.31 MB
Format
Adobe PDF
Checksum (MD5)
f1523157dade387a321d8751454edb89
Author(s)
Turner, Matthew J.
Walsworth, Ronald L.
Schloss, Jennifer May
Barry, John F.
Date Issued
September 2018
Journal
Physical Review Applied
Publisher
American Physical Society
Citation
Schloss, Jennifer M. et al. "Simultaneous Broadband Vector Magnetometry Using Solid-State Spins." Physical Review Applied 10, 3 (September 2018): 034044 © 2018 American Physical Society
Version
Final published version
Abstract
We demonstrate a vector magnetometer that simultaneously measures all Cartesian components of a dynamic magnetic field using an ensemble of nitrogen-vacancy (NV) centers in a single-crystal diamond. Optical NV-diamond measurements provide high-sensitivity, broadband magnetometry under ambient or extreme physical conditions and the fixed crystallographic axes inherent to this solid-state system enable vector sensing free from heading errors. In the present device, multichannel lock-in detection extracts the magnetic-field-dependent spin-resonance shifts of NVs oriented along all four tetrahedral diamond axes from the optical signal measured on a single detector. The sensor operates from near dc (5 Hz) up to a 12.5-kHz measurement bandwidth and simultaneously achieves approximately 50pT/sqrt[Hz] magnetic-field sensitivity for each Cartesian component, which is, to date, the highest demonstrated sensitivity of a full vector magnetometer employing solid-state spins. Compared to optimized devices interrogating the four NV orientations sequentially, the simultaneous vector magnetometer enables a 4× measurement speedup. This technique can be extended to pulsed-type sensing protocols and parallel wide-field magnetic imaging.
MIT Department
Lincoln Laboratory
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevApplied.10.034044
