Chinese Physicists Develop Quantum Radar That Can Detect Stealth Jets

© Photo : Northrop GrummanB-2 Stealth Bomber.
B-2 Stealth Bomber. - Sputnik International
Chinese scientists have developed a small, powerful and secure radar system that relies on quantum physics to detect stealth targets located up to 100 kilometers (62 miles) away, China Electronics Technology Group Corporation (CETC) announced.

CETC described the device as the first "single-photon quantum radar system" in the country that uses entangled photons to detect objects that remain invisible to existing systems.

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If true, this will come as bad news for the Pentagon which has heavily invested in stealth as the key game-changing technology in defense. The DoD's latest procurements include the costly Lockheed Martin F-35 Lightning II stealth multirole fighter and the USS Zumwalt (DDG-1000) guided missile destroyer that also has stealth capabilities.

The CETC radar utilizes a physical phenomenon known as quantum entanglement. Albert Einstein famously derided quantum entanglement as a "spooky action at a distance," but later research showed that the concept was indeed feasible.

This is how it works. A quantum radar generates pairs of entangled photons, sending one particle into the air. This enables the system to obtain "critical information about a target, including its shape, location, speed, temperature and even the chemical composition of its paint from returning photons," Stephen Chen explained.

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In theory, a quantum radar needs only one returning photon to determine an object's composition, the direction it is headed and its speed.

This might sound like something from a science fiction novel, but the radar, according to CETC, has already been tested. The system intercepted targets located 100 kilometers away during a recent field trial, but some say that the maximum range could be greater.

"The figure in declassified documents is usually a tuned-down version of the real [performance]," Professor Ma Xiaosong, a physicist at Nanjing University, told South China Morning Post. "The announcement has gone viral [in the radar research community]."

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The new system, according to CETC, has additional advantages, including small size and resilience to countermeasures.

CETC designs and manufactures advanced electronics and communication equipment, information systems, software and components for military and civilian purposes. The state-owned company comprises research institutions behind some of the major technological breakthroughs in the country. They are said to have developed electronics for China's first nuclear bomb, guided missile and geo-orbital satellite.

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