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Updated: Aug 8, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Dispersion spreading of biphotons in optical fibers and two-photon interference
G Brida1, M V Chekhova, M Genovese
1Istituto Elettrotecnico Nazionale Galileo Ferraris, Strada delle Cacce 91, 10135 Turin, Italy.
Abstract:
We present the first observation of two-photon polarization interference structure in the second-order Glauber correlation function of two-photon light generated via type-II spontaneous parametric down-conversion. In order to obtain this result, two-photon light is transmitted through an optical fiber and the coincidence distribution is analyzed by means of the start-stop method. Beyond the experimental demonstration of an interesting effect in quantum optics, these results also have considerable relevance for quantum communications.
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