Chinese scientists have unveiled a powerful quantum sensor that could tip the balance in undersea warfare. Tested offshore, the drone-mounted system achieves picotesla-level precision, tracking submarines and mapping seabed resources with unprecedented accuracy. The breakthrough overcomes limitations of traditional magnetometers, offering omnidirectional detection even in low-latitude blind zones like the South China Sea. Using coherent population trapping in rubidium atoms, the new Chinese sensor rivals NATO’s MAD-XR at a fraction of the cost, potentially reshaping anti-submarine operations across key strategic waters.
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