RT @email@example.com that means that you can distinguish background light from reflected light, which actually sounds like a huge improvement. according to linked researchers, it could decrease probability of error by orders of magnitude. https://arxiv.org/pdf/1410.4008.pdf
"Quantum illumination is a quantum-optical sensing technique in which an entangled source is exploited to improve the detection of a low-reflectivity object that is immersed in a bright thermal background." Thread on quantum radar research in Canada, the arctic, and arms race.