Reconstruction of vector static magnetic field by different axial NV centers using continuous wave optically detected magnetic resonance in diamond

Abstract

We carried out a proof-of-principle demonstration of the reconstruction of a static vector magnetic field involving adjacent three nitrogen-vacancy (NV) sensors with corresponding different NV symmetry axes in a bulk diamond. By means of optical detection of the magnetic resonance (ODMR) techniques, our experiment employs the continuous wave (CW) to monitor resonance frequencies and it extracts the information of the detected field strength and polar angles with respect to each NV frame of reference. Finally, the detected magnetic field relative to a fixed laboratory reference frame was reconstructed from the information acquired by the multi-NV sensor.

Nitrogen-vacancy center magnetic imaging of Fe3O4 nanoparticles inside the gastrointestinal tract of Drosophila melanogaster

“…Since the Zeeman splitting is proportional to the magnetic eld projected onto the respective NV axis and the lattice orientation of the single-crystal diamond is known, it is possible to reconstruct the magnetic eld components from the measurement data. 66,67 This is done by a transformation of the magnetic eld vector coordinates. The magnetic eld components acquired in the base dened by the four NV center orientations are transformed into the three Cartesian laboratory frame components.…”

Micron-sized fiber diamond probe for quantum precision measurement of microwave magnetic field

“…A green laser with a wavelength of 532 nm pumps the diamond crystal at the front taper through the fiber, and the red fluorescence is returned along the original path, passing through the dichroic mirror and entering the avalanche photodetector (APD) to output a voltage signal. We characterize the MW magnetic field with the NV axis set vertically, [18][19][20] and the Rabi frequency at resonance can reflect the horizontal component of MW magnetic field (composed of the X and Y components). The Zeeman effect splits energy levels under a DC magnetic field, representing four peaks in the optically detected magnetic resonance (ODMR) spectrum.…”

Orientation determination of nitrogen-vacancy center in diamond using a static magnetic field

“…[10] Its electron spin state information can be easily extracted by optically detected magnetic resonance (ODMR) spectra. [9] Its electron spin is sensitive to multiple physical quantities, which makes it possible to be a promising quantum sensor for multiple physical quantities with high sensitivity and spatial resolution, such as electric field, [11,12] magnetic field, [13][14][15][16] temperature, [17,18] and crystal strain. [19,20] Accurate and reliable measurement of NV orientation is a crucial step when one attempts to utilize the NV centers for solidstate quantum sensing.…”