This is awesome technology. We finally found a way to weaponize quantum entanglement. The purpose of this article is to sell fear and awe to the public so people will continue to support spending hundreds of billions of dollars with defense contractors. The idea is that the Chinese are our enemies and that we must develop this technology no matter the cost to be safe from them. I also think it is interesting because I thought that passive radar systems already defeated stealth technology. There is so much EM radiation that they don't have to send out a ping and await it's return they can sort of look for the place where there is a hole in the background radiation. Here is some more information on passive radar
Cool stuff but quantum radar is the next level, they create an entangled pair of particles and then send one out and they keep the other one so then they can identify the specific particle when it returns, nuts, I am explaining it poorly here is the article:
It’s just one of several quantum-inspired technologies that could change the face of warfare. As well as unstealthing aircraft, they could bolster the security of battlefield communications and affect the ability of submarines to navigate the oceans undetected. The pursuit of these technologies is triggering a new arms race between the US and China, which sees the emerging quantum era as a once-in-a-lifetime opportunity to gain the edge over its rival in military tech.
Stealth spotter
How quickly quantum advances will influence military power will depend on the work of researchers like Jonathan Baugh. A professor at the University of Waterloo in Canada, Baugh is working on a device that’s part of a bigger project to develop quantum radar. Its intended users: stations in the Arctic run by the North American Aerospace Defense Command, or NORAD, a joint US-Canadian organization.
Baugh’s machine generates pairs of photons that are “entangled”—a phenomenon that means the particles of light share a single quantum state. A change in one photon immediately influences the state of the other, even if they are separated by vast distances.
Quantum radar operates by taking one photon from every pair generated and firing it out in a microwave beam. The other photon from each pair is held back inside the radar system.
Equipment from a prototype quantum radar system made by China Electronics Technology Group Corporation
Imaginechina via AP Images
Only a few of the photons sent out will be reflected back if they hit a stealth aircraft. A conventional radar wouldn’t be able to distinguish these returning photons from the mass of other incoming ones created by natural phenomena—or by radar-jamming devices. But a quantum radar can check for evidence that incoming photons are entangled with the ones held back. Any that are must have originated at the radar station. This enables it to detect even the faintest of return signals in a mass of background noise.
Then they have a bunch of scary stuff about how the Chinese are surpassing us in the pursuit of this technology, so buy some war bonds today I guess.
Are you scared and amazed yet?
This is an 
