Researchers have taken 3D images by bouncing individual photons from a laser off a building 45 kilometres away, more than 4 times farther than ever before
Source:
https://www.newscientist.com/article/2250185-single-particles-of-light-can-be-used-for-remote-3d-surveillance/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home