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Quantum Imaging is a discipline that seeks methods to capture images with properties that exceed the standard limit for image acquisition. Goals of this work include forming images with spatial resolution that exceeds the standard Abbe or Rayleigh form, forming high-quality images using a small number of photons, or forming an image at a wavelength different from the wavelength of the light that illuminates the object to be imaged. Another goal is the form high-quality images when a scattering medium is located between the object and the observer. In this talk I will describe some of the results of research performed in this area. I will pay special attention to the process of ghost imaging. Some implementations of ghost imaging make use of the quantum methods, whereas other use entirely classical methods. Both methods make use of two highly correlated light waves. One of these waves interacts with the object to be imaged, and if it is not absorbed by the object it is detected by a detection system with broad angular acceptance, that is, is detected by a bucket detector. The other wave falls onto a camera with good spatial resolution. By correlating the signals from the two detectors, an image of the object is built up. In this talk I will first describe in more detail how the process of ghost imaging operates and will then provide a critique of when ghost imaging is useful and when it is not.
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