Remote Sensing with a Twist

摘要

Our eyes sense light that has bounced off objects, with our brain then making sense of the input flowing through the optic nerve. In this case, the photons that hit our eyes must interact with the object. However, it is possible to get information about an object using photons that have not actually hit the object. This counterintuitive process of "ghost imaging" follows from the quantum-mechanical properties of photons and the ability to find correlations between specially generated pairs of photons. Uribe-Patarroyo et at.