China announces quantum radar to detect stealth aircraft

State defense contractor China Electronics Technology Group Corporation (CETGC) unveiled a prototype of an advanced quantum radar capable of detecting stealth aircraft at the Zhuhai Airshow.

As explained by The Drive, unlike conventional radar, quantum detects targets using pairs of interconnected photons: one of them - the control or "home" remains in the system, and the other is emitted into space to detect the target.

Then the photons reflected from the target are returned to the radar receiver, which registers and processes them, after which it compares the characteristics of the received photon with the "home" one. Analyzing the difference between them, the radar calculates all the parameters of the target - its shape, place in space, speed, temperature, and even the composition of the paint of the aircraft.

Chinese experts claim to have been involved with this technology for many years and first tested it three years ago.