A New Quantum Breakthrough Could End Submarine Stealth For Good

Chinese researchers have developed a drone-mounted quantum magnetometer that matches the performance of NATO's Magnetic Anomaly Detection-Extended Role system at significantly lower cost, according to a report published Thursday. The system uses Coherent Population Trapping atomic magnetometer technology with rubidium atom clouds to detect magnetic anomalies indicating submerged vessels. It operates effectively as a single unit, unlike the NATO system which requires multiple probes. The technology addresses a limitation of traditional magnetic detection in low-latitude waters such as the South China Sea, where the Earth's magnetic field runs parallel to the surface creating detection blind spots. Quantum sensing research is also advancing with quantum gravimeters that supercool rubidium atoms to near absolute zero to measure gravity variations caused by submarines displacing water, and Superconducting Quantum Interference Devices that detect faint magnetic fields using supercooled conductive loops. These prototype technologies could force navies to adopt new countermeasures including more compact submarines, active jammers, or drone swarms to camouflage movements, the report said.