出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/02/26 13:29 UTC 版)
Ghost imaging is a technique that allows a high resolution camera to produce an image of an object which the camera cannot itself see. The first demonstrations of ghost imaging were based on the quantum nature of light. Specifically, quantum correlations between photon pairs were utilized to build up an image of the unseen object. When one of the photons strikes the object, the other follows a different path to the camera's lens. If the camera is constructed to only record pixels from photons that hit simultaneously at the object and the camera's image plane, an image of the object is reconstructed.