Quantum diffraction and interference of spatially correlated photon pairs generated by spontaneous parametric down-conversion

Ryosuke Shimizu; Keiichi Edamatsu; Tadashi Itoh

doi:10.1103/PhysRevA.67.041805

Quantum diffraction and interference of spatially correlated photon pairs generated by spontaneous parametric down-conversion

Quantum Physics 2009-11-07 v1

Authors: Ryosuke Shimizu , Keiichi Edamatsu , Tadashi Itoh

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Abstract

We demonstrate one- and two-photon diffraction and interference experiments utilizing parametric down-converted photon pairs (biphotons) and a transmission grating. With two-photon detection, the biphoton exhibits a diffraction-interference pattern equivalent to that of an effective single particle that is associated with half the wavelength of the constituent photons. With one-photon detection, however no diffraction-interference pattern is observed. We show that these phenomena originate from the spatial quantum correlation between the down-converted photons.

Keywords

quantum optics spontaneous parametric down-conversion hong-ou-mandel interference

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@article{arxiv.quant-ph/0210142,
  title  = {Quantum diffraction and interference of spatially correlated photon pairs generated by spontaneous parametric down-conversion},
  author = {Ryosuke Shimizu and Keiichi Edamatsu and Tadashi Itoh},
  journal= {arXiv preprint arXiv:quant-ph/0210142},
  year   = {2009}
}

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4 pages, 5 figures

Quantum diffraction and interference of spatially correlated photon pairs generated by spontaneous parametric down-conversion

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