Research Of Novel Imaging Methods Based On Quantum Correlation

Quantum correlation imaging(or Ghost imaging, GI) is a novel imaging technique which has become increasingly popular in recent years. At the beginning of ghost imaging, the entangled light is necessary. People take the advantage of entangled two-photon, the entanglement properties, to get non-local imaging with coincidence counting. Later, experiments found that the classic source can also be used in quantum imaging, so entangled light source is no longer necessary, it extended the research of quantum correlation imaging. From the basic theory of quantum optics, we studied the quantum correlated imaging. The main content of this paper can be divided as follows:1. The history of quantum imaging is described in the beginning, including EPR paradox and HBT experiment. Briefly introduced the preparation of entangled light source, ghost imaging based on entangled light source, and the theory as well as experiment of GI based on classical light source. The progress of quantum imaging applications is also given in the end of chapter 1.2. It has been introduced the coherence of light in two ways, the classical and quantum. Based on Young's interference, the explanation of the first order coherence in classical and quantum is introduced. Then we go to introduced the second order coherence functions i.e. the intensity-intensity correlation and high-order coherence functions that is useful in the latter chapters3. It was explained of the fundamental principles of the correlated imaging and introduced the speckle generated from the laser which scattered by ground glass, which is useful in correlated imaging. We emphasis the principle of correlated imaging based on thermal light which is the most general issue in quantum imaging. At last we give the detail derivation of signal-noise-rate(SNR) of both the conventional ghost imaging and the differential ghost imaging(DGI).4. We use the pseudo-thermal light as the light source to conduct an experiment to study the correlated imaging. We simulated the essential elements in ghost imaging,and have got some conclusions. Then we finished an experiment.of ghost imaging.