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Long distance entanglement swapping with photons from separated sources
H. de Riedmatten, I. Marcikic, J. A. W. van Houwelingen +3
We report the first experimental realization of entanglement swapping over large distances in optical fibers. Two photons separated by more than two km of optical fibers are entang…
Photon-bunching measurement after 2x25km of standard optical fibers
M. Halder, S. Tanzilli, H. de Riedmatten +3
To show the feasibility of a long distance partial Bell-State measurement, a Hong-Ou-Mandel experiment with coherent photons is reported. Pairs of degenerate photons at telecom wav…
Four-photon correction in two-photon Bell experiments
Valerio Scarani, Hugues de Riedmatten, Ivan Marcikic +2
Correlated photons produced by spontaneous parametric down-conversion are an essential tool for quantum communication, especially suited for long-distance connections. To have a re…
Distribution of time-bin qubits over 50 km of optical fiber
I. Marcikic, H. de Riedmatten, W. Tittel +3
We report experimental distribution of time-bin entangled qubits over 50 km of optical fibers. Using actively stabilized preparation and measurement devices we demonstrate violatio…