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We test local realistic and non-local realistic theories using a fiber-based source of polarization-entangled photons. Our measurements violate local (certain non-local) hidden-variable theories by 15 (Leggett, A.) standard deviations.
We report observation of enhanced correlation, wavelength shifting, and spectral broadening of the twin beams in a parametric amplification with a gain greater than 30 dB in a 1.7 m microstructure fiber.
We observe significant classical and quantum correlation in photon-number noise measurements in four-wave mixing in micro-structured fiber. The classical correlation is the same as the quantum correlation obtained using photon counting
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