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Pis'ma v Zh. Èksper. Teoret. Fiz., 2010, Volume 91, Issue 12, Pages 718–723 (Mi jetpl747)  

ATOMS, SPECTRA, RADIATIONS

Transverse compression of two-photon wave packets

M. V. Chekhova, O. A. Shumilkina

M. V. Lomonosov Moscow State University, Faculty of Physics

Abstract: A method for generating two-photon wave packets (biphotons) with a small width of the spatial intensity correlation function (correlation radius) has been considered. We propose to prepare a two-photon wave packet inhomogeneously broadened in the angle by means of spontaneous parametric down-conversion in an inhomogeneous crystal. Such biphotons are not diffraction limited; i.e., their correlation radius is much larger than the inverse width of the spatial spectrum. However, the correlation radius of such a biphoton decreases as the biphoton propagates in free space, and transverse compression occurs at a certain distance from the crystal; i.e., the biphoton becomes diffraction limited.

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English version:
Journal of Experimental and Theoretical Physics Letters, 2010, 91:12, 649–654

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Received: 19.05.2010

Citation: M. V. Chekhova, O. A. Shumilkina, “Transverse compression of two-photon wave packets”, Pis'ma v Zh. Èksper. Teoret. Fiz., 91:12 (2010), 718–723; JETP Letters, 91:12 (2010), 649–654

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