Four-Photon Interference with Asymmetric Beam Splitters
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🪐 quant-ph
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four-photoninterferenceasymmetricbeameffectpairsphotonssplitters
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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 $\lambda/4$ by projection measurement.
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