Researchers hope to harness the quantum properties of light in order to surpass classical resolution limits when imaging objects remotely, using so-called quantum sensing. Now a researcher team has proposed a technique that could extend the useful distances of this technology from tens of meters to hundreds of kilometers [1]. The design would employ a bizarre quantum effect: the ability of light to be imprinted with information about an object even if it has never actually interacted with that object. The researchers hope to demonstrate the idea in the next few years.
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