Patent ID: 9234840
Filing Date: 2016-01-12
CPC Classification: G01N

Claim Text:
1. A device for characterizing an object, the device comprising: at least one light source configured to direct photons toward an object; an interferometer configured to receive photons from the object; at least one detector system configured to detect an optical signal at an output of the interferometer and to remove, from said optical signal, a signal portion representing first order photon correlations, when present; and a processor configured to receive data relating to second-order correlated photons from said at least one detector system, wherein each photon or photon pair is subject to at least two indistinguishable paths to a photon or photon pair but differing in at least one of time and length, and wherein the processor is configured to characterize the object based on a self interference of the second-order correlated photons from a common location within the object.