Study of the effect of pump focusing on the performance of ghost imaging and ghost diffraction,based on spontaneous parametric downconversion |
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| Authors: | Daniel R Guido Alfred B U'Ren |
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| Institution: | 1. Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, apdo. postal 70–543, Mexico 04510 DF, Mexico;2. Departamento de Optica, Centro de Investigación Científica y de Educación Superior de Ensenada, Apartado Postal 2732, Ensenada, BC 22860, Mexico;1. Daresbury Laboratory, Daresbury, Warrington, Cheshire WA4 4AD, UK;2. Laboratory of Quantum Chemistry, Irkutsk State University, 664003 Irkutsk, Russia;3. Favorsky Institute of Chemistry, SB RAS, 664033 Irkutsk, Russia;4. Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany;5. Interdisciplinary Centre for Scientific Computation, Universität Heidelberg, Im Neuenheimer Feld 368, D-69120 Heidelberg, Germany;6. Faculty of Chemistry, University of Warsaw, ul. Pasteura 1, PL-02-093 Warsaw, Poland;7. Synchrotron Soleil, Orme des Merisiers, St Aubin BP48, 91192 GIF sur Yvette Cedex, France;1. Department of Nuclear Physics, University of Tabriz, Tabriz 51664, Iran;2. Plasma and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute, AEOI, PO Box 14155-1339, Tehran, Iran;3. Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664, Iran;4. Research Institute for Fundamental Sciences, Tabriz 51664, Iran;5. Irradiation Applications, Nuclear Science and Technology Research Institute, AEOI, PO Box 14155-1339, Tehran, Iran;1. Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A. P. 70-543, 04510 México D.F., Mexico;2. Institut für Theoretische Physik, JW Goethe-Universität Frankfurt am Main, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany;3. Physics Department, Cinvestav, A. P. 14-740, 07000 México D. F., Mexico |
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| Abstract: | We study the effects of ghost imaging (GI) and ghost diffraction (GD), based on spontaneous parametric downconversion (SPDC) photon-pair sources. In particular, we focus on the effect of pump focusing in the SPDC process, on GI and GD. Our theory presented in this paper includes the cases of frequency-degenerate and frequency non-degenerate SPDC. We show analytically, and confirm through numerical simulations, that pump focusing degrades the performance of GI and GD, and for a sufficient focusing strength can altogether suppress these effects. |
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