Four-Photon Interference with Asymmetric Beam Splitters
B. H. Liu, F. W. Sun, Y. X. Gong, Y. F. Huang, G. C. Guo, Z. Y. Ou
Abstract
Two experiments of four-photon interference are performed with two pairs of photons from parametric down-conversion with the help of asymmetric beam splitters. The first experiment is a generalization of the Hong-Ou-Mandel interference effect to two pairs of photons while the second one utilizes this effect to demonstrate a four-photon de Broglie wavelength of λ/4 by projection measurement.
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