Radar jamming planes like this one have a healthy future, if the author’s skepticism is to be believed. DOD

You can’t hide from quantum radar

Using quantum key distribution can detect radar jamming, at least in theory.

by Chris Lee – Jan 9 2013, 5:00pm EST

Radar is, broadly speaking, the standard way to recognize and identify incoming objects. Aircraft and ships usually broadcast a signal that identifies them anyway, but even in the absence of that signal, you still want to ensure that you accurately identify passing aircraft—and not by the wreckage they leave after you have shot them down.

This is also critical because the approaching aircraft could broadcast a signature that makes it look innocent when, in fact, it isn’t. This form of sophisticated jamming would be very difficult to detect using a standard radar system. When you add the magic of quantum, however, life suddenly becomes a lot harder for the jammer.

Read more: You can’t hide from quantum radar | Ars Technica.

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