Don’t Buy Into China’s Stealth-Defeating ‘Quantum Radar’ Hype
War Is Boring

It’s very hard to determine what the Chinese group actually did. The SCMP story contains statements like “In theory, a quantum radar could detect a target’s composition, heading and speed even if managed to retrieve just one returning photon.” Umm, no. Of course, the journalists don’t know the science. We have a commenter here saying something about “liquid crystal Beryllium in a… Penning trap” which might sound like he knows what he’s talking about but actually shows that he does not. In any case, yeah, don’t believe the hype. True quantum radar is a fancy physics experiment at the present and while it might be possible in practice it is probably not worth the trouble. Dave is right that networked radars are a more practical way to beat stealth.

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