Phys. Rev. Lett. 74, 3600–3603 (1995)Observation of Two-Photon “Ghost” Interference and DiffractionReceived 11 August 1994; published in the issue dated 1 May 1995 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. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.3600
DOI:
10.1103/PhysRevLett.74.3600
PACS:
42.50.Dv, 03.65.Bz
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