Simultaneous Broadband Vector Magnetometry Using Solid-State Spins

By J. Schloss, J. Barry, M. Turner, R. Walsworth. Physical Review Applied, 2018

228 citations recorded by the source corpus.

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, multi-channel 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 up to a $12.5$ kHz measurement bandwidth; and simultaneously achieves $\sim\!50$ pT/$\sqrt{\text{Hz}}$ 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 $4\times$ measurement speedup. This technique can be extended to pulsed-type sensing protocols and parallel wide-field magnetic imaging.

Subfields: Atomic and Molecular Physics, and Optics, Geophysics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/aa8e4b035ad786573a19a29dfdc46ad6ca163700

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. M. Turner
2. J. Barry
3. J. Schloss
4. C. Hart
5. L. Pham
6. E. Bauch
7. R. Walsworth

In Geophysics

1. M. Turner
2. J. Schloss
3. J. Barry
4. R. Walsworth
5. C. Hart
6. L. Pham
7. E. Bauch

In Materials Chemistry

1. M. Turner
2. R. Walsworth
3. C. Hart
4. J. Schloss
5. J. Barry
6. L. Pham
7. E. Bauch

Citations in the corpus

• Sensitivity optimization for NV-diamond magnetometry (2019, methodology): “…(CW-ODMR) is a simple and widely employed magnetometry method (Acosta et al., 2009; Barry et al., 2016; Dréau et al., 2011; Fuchs et al., 2008; Schloss et al., 2018; Schoenfeld and Harneit, 2011; Tetienne et al., 2012) wherein the MW driving and the optical polarization and readout occur…”
• Principles and techniques of the quantum diamond microscope (2019, methodology): “This technique has been extended to monitor multiple ODMR features simultaneously to extract the vector magnetic field by modulating at different frequencies [52].”