Quantum diffraction and interference of spatially correlated photon pairs and its Fourier-optical analysis

Details Quantum diffraction and interference of spatially correlated photon pairs and its Fourier-optical analysis Quantum diffraction and interference of spatially correlated photon pairs and its Fourier-optical analysis

2006-03-08

arxiv.org/abs/quant-ph/0603064v2

Physics

Quantum Physics

10 pages, 13 figures, rev.2

Scientific paper

10.1103/PhysRevA.74.013801

We present one- and two-photon diffraction and interference experiments involving parametric down-converted photon pairs. By controlling the divergence of the pump beam in parametric down-conversion, the diffraction-interference pattern produced by an object changes from a quantum (perfectly correlated) case to a classical (uncorrelated) one. The observed diffraction and interference patterns are accurately reproduced by Fourier-optical analysis taking into account the quantum spatial correlation. We show that the relation between the spatial correlation and the object size plays a crucial role in the formation of both one- and two-photon diffraction-interference patterns.

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