Comment on Ghost imaging with a single detector [arXiv0812.2633v2]

Details Comment on Ghost imaging with a single detector [arXiv0812.2633v2] Comment on Ghost imaging with a single detector [arXiv0812.2633v2]

2009-02-11

arxiv.org/abs/0902.1940v1

Physics

Quantum Physics

4 pages with 1 figure

Scientific paper

Computational ghost imaging has been demonstrated experimentally recently. In this comment we wish to clarify the difference between pseudothermal ghost imaging (PGI) and computational ghost imaging (CGI). In particular, to emphasize the physics that arises from the difference in the type of sources used. The experiment in [2] is not a PGI experiment but is a simulation of PGI. If we consider CGI at the single photon level, it becomes clear that CGI relies on two identical photons, one real and one simulated, to obtain an image.

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