Research team realizes quantum-enhanced microwave ranging

https://phys.org/news/2023-04-team-quantum-enhanced-microwave-ranging.html

"positioning accuracy 10-4 wavelengths... diamond spin quantum sensor and metal nanostructure antenna collects and converges microwave signals converting detection of weak signals intthe detection of electromagnetic field and solid-state spin interaction at nanoscale, improving signal measurement sensitivity 3–4 orders of magnitude... quantum-enhanced position measurement 10 µm accuracy... automatic driving, intelligent manufacturing, health monitoring, and geological exploration"