Researchers propose quantum Earth observation for photon-limited environments

Have you ever wondered what Earth observation satellites see when they look down at the deep ocean or a dense tropical forest during the dead of night? The answer, for the most part, is nothing. Standard optical sensors require a steady stream of light to function, and in these photon-limited regions, they hit a hard physical boundary. But what if we could rewrite the rules of optical imaging? By borrowing techniques from quantum photonics, we can push beyond these classical limits and unlock a fundamentally new way to observe the darkest and most hidden environments on our planet.