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Chinese scientists have successfully demonstrated a compact quantum magnetometer capable of detecting underground train activity and locating buried magnets in field tests, marking a significant step toward practical applications in mineral exploration and environmental monitoring. The device's ability to automatically restore measurements within a second after interference highlights progress in overcoming stability challenges inherent to sensitive quantum sensing hardware. This development underscores the growing maturity of quantum sensors for real-world geophysical tasks beyond theoretical lab settings.
Chinese Scientists Say Compact Quantum Magnetometer Tracks Hidden Targets in Field Tests
Insider Brief Chinese researchers developed a compact quantum magnetometer that detected underground train activity, located a buried magnet and monitored a geomagnetic storm in field tests. The instrument uses a small sensing probe — about the the size of two dice placed side by side — and automatically restores measurements within a second after strong […]
Chinese researchers developed a compact quantum magnetometer that detected underground train activity, located a buried magnet and monitored a geomagnetic storm in field tests. The instrument uses a 7-cubic-centimeter sensing probe and automatically restores measurements within a second after strong magnetic interference is removed. The findings suggest the system could support mineral exploration, environmental monitoring and searches for unexploded ordnance. Image: Schematic diagram and photograph of the miniaturized magnetometer system from the study. Chinese researchers developed a compact quantum magnetometer that detected underground train activity, located a buried magnet and monitored a geomagnetic storm in field tests. The instrument uses a small sensing probe — about the the size of two dice placed side by side — and automatically restores measurements within a second after strong magnetic interference is removed. In the study, the researchers’ compact quantum magnetometer — with separate electronics controls — detected underground…
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