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Observation of Two-Photon “Ghost” Interference and Diffraction

1995; American Physical Society; Volume: 74; Issue: 18 Linguagem: Inglês

10.1103/physrevlett.74.3600

1092-0145

Dmitry Strekalov, А. В. Сергиенко, D. N. Klyshko, Yanhua Shih,

Random lasers and scattering media

Observations of unusual diffraction and interference by two-photon correlation measurements are reported. The signal and idler beams produced by spontaneous parametric down-conversion are sent in different directions, and detected by two distant pointlike photon counting detectors. A double slit or a single slit is inserted into the signal beam. Interference-diffraction patterns are observed in coincidences by scanning the detector in the idler beam.