Transverse compression of two-photon wave packets |
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Authors: | M V Chekhova and O A Shumilkina |
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Institution: | 1.Faculty of Physics,Moscow State University,Moscow,Russia |
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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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Keywords: | |
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