2025/09/18 by Ayisha Suhana, Suhana, A., Tatiana A. Uaman Svetikova +9
Engineering · Physics and Astronomy · #Near-Field Optical Microscopy #Quantum and electron transport phenomena #Mechanical and Optical Resonators
paper · pdf · doi:10.48550/arxiv.2509.14888
We report the experimental realization of a quantum silicon carbide microscope (QSiCM) and demonstrate its functionality by imaging magnetic fields generated by electrical currents. We employ a dual-frequency sensing protocol to enhance the readout contrast and suppress noise arising from strain and temperature fluctuations. This approach enables spatial imaging of current-induced magnetic fields with a field of view of 50 × 50 virtual pixels, temporal resolution of 50 ms, spatial resolution of 30 μm and sensitivity of about 2 \mathrmμT Hz-1/2 per pixel. Further sensitivity enhancement is anticipated through the use of isotopically purified SiC and improved light collection in crystallographically optimized wafer orientations. In addition, we implement a microwave-free imaging protocol based on spin level anticrossing, offering simplified operation with enhanced sensitivity. The demonstrated platform is compatible with commercial, wafer-scale fabrication and holds strong potential for applications in biomedical imaging and diagnostics, as well as non-invasive current and temperature mapping in high-power electronic devices.