Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 48: Poster – Quantum Optics, Technologies, and Optomechanics
Q 48.22: Poster
Mittwoch, 12. März 2025, 17:00–19:00, Tent
Simultaneous Three Component Magnetometry Using NV Centers for Applications in Power Distribution Networks — •Frederik Hoffmann1, Ann-Sophie Bülter1, Ludwig Horsthemke1, Jens Pogorzelski1, Markus Gregor2, and Peter Glösekötter1 — 1Dept. Electrical Engineering and Computer Science, FH Münster — 2Dept. Engineering Physics, FH Münster
This poster presents a concept for current measurement in low and medium voltage power distribution networks. For current measurement, the concentric magnetic field around the current-carrying conductor can be measured using a nitrogen-vacancy quantum magnetic field sensor [1]. A bottleneck in current measurement systems is the readout electronics, which is usually based on optically detected magnetic resonance (ODMR) [2]. A new concept is presented here that tracks up to four resonances simultaneously for the detection of the three axis magnetic field components and the temperature. The electronics is based on FPGA (Red Pitaya). For this purpose, a plug-on board has been developed that allows to control the excitation laser, the generation of the microwaves, interfacing the photodiode and provides additional fast digital outputs.
[1] Pogorzelski, J., Horsthemke, L., Homrighausen, J., Stiegekötter, D., Gregor, M., & Glösekötter, P. (2024). Compact and Fully Integrated LED Quantum Sensor Based on NV Centers in Diamond. Sensors, 24(3), 743. [2] Schloss, J., Barry, J., Turner, M., & Walsworth, R. (2018). Simultaneous Broadband Vector Magnetometry Using Solid-State Spins. Phys. Rev. Appl., 10, 034044.
Keywords: Magnetometry; NV Centers; Power Distribution Networks; FPGA