Multichannel highly sensitive diamond quantum magnetometer
Abstract
We demonstrate a highly sensitive real-time magnetometry method at two measurement points. This magnetometry method is based on the frequency-division multiplexing of continuous-wave optically detected magnetic resonance. We use two ensembles of nitrogen-vacancy (NV) centers separated by 3.6 mm to measure a magnetic field. A different bias field is applied to the two NV ensembles to resolve the resonance peak for each ensemble in the frequency space and enables the multiplexed magnetometry at the two points. The sensitivities achieved at the measurement points are 21 and 22pT/Hz. The proposed magnetometry method can be expanded to include more measurement points and shorter spacing. The capability of real-time measurement at numerous points with short spacing and high sensitivity is beneficial for various applications, including biomagnetic sensing, geophysical research, and material science.
Article Details
Journal Info
Journal of Applied Physics
American Institute of Physics
Authors (12)
A. Yoshimura
Department of Electrical and Electronic Engineering, Institute of Science Tokyo 1 , Meguro, Tokyo 152-8550,
A. Kanamoto
Department of Electrical and Electronic Engineering, Institute of Science Tokyo 1 , Meguro, Tokyo 152-8550,
N. Sekiguchi
Department of Electrical and Electronic Engineering, Institute of Science Tokyo 1 , Meguro, Tokyo 152-8550,
C. Shinei
Research Center for Electronic and Optical Materials, National Institute for Materials Science 2 , Tsukuba, Ibaraki 305-0044,
M. Miyakawa
Research Center for Materials Nanoarchitectonics, National Institute for Materials Science 4 , Tsukuba, Ibaraki 305-0044,
T. Taniguchi
T. Teraji
Research Center for Electronic and Optical Materials, National Institute for Materials Science 3 , 1-1 Namiki, Tsukuba, Ibaraki 305-0044,
H. Abe
Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology 5 , Takasaki, Gunma 370-1292,
S. Onoda
Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology 5 , Takasaki, Gunma 370-1292,
T. Ohshima
Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology 5 , Takasaki, Gunma 370-1292,
T. Iwasaki
Department of Electrical and Electronic Engineering, Institute of Science Tokyo 1 , Meguro, Tokyo 152-8550,
M. Hatano
Department of Electrical and Electronic Engineering, Institute of Science Tokyo 1 , Meguro, Tokyo 152-8550,