In the not too distant future, stealth technologies will become less effective. Including, thanks to the project of the Canadian Department of Defense to create a new quantum radar. The project cost is $ 2, 7 million.
The project is being led by Jonathan Baugh of the University of Waterloo's Institute for Quantum Computing (IQC). The new radar is based on the principle of the phenomenon of quantum entanglement to eliminate strong background noise. As a result, stealth aircraft detection becomes a reality.
The main problem of a conventional radar is that target detection is related to the signal-to-noise ratio, that is, the signal reflected from the target is always accompanied by random extraneous noise. To isolate the signal, you have to increase the power of the radar, which inevitably leads to an increase in noise.
The essence of the concept of quantum entanglement boils down to the fact that if electrons, photons or other quantum particles are connected (entangled) with each other, then the connection between them remains even if they are taken apart to different ends of the Universe.
Quantum radar uses what is called quantum illumination, which filters out noise by forcing outgoing photons to identify the radar signal using the principle of quantum entanglement. As a result, the photon from the transmitting antenna of the radar, while maintaining communication with its pair, filters out "alien" photons of the reflected signal. Thus, background noise and electronic interference are eliminated, and the target mark on the radar screen becomes clear enough to detect even the most advanced stealth aircraft.
The IQC-developed quantum radar is currently undergoing laboratory testing, but it is hoped that it will one day become a real operational radar.