Dispersion Spreading of Biphotons in Optical Fibers and Two-Photon Interference
G. Brida, Maria V. Chekhova, Marco Genovese, Marco Gramegna, Leonid A. Krivitsky · Physical Review Letters · 2006
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.