EPJ Web of Conferences (Jan 2015)

The Source of Time-Correlated Photons at 1.064 μm and its Applications

  • Gostev P.P.,
  • Magnitsky S.A.,
  • Nagorsky N.M.,
  • Protsenko I.E.,
  • Saygin M.Yu.,
  • Turaev M.A.,
  • Firsov V.V.,
  • Frolovtsev D.N.,
  • Yakovlev D.V.

DOI
https://doi.org/10.1051/epjconf/201510310010
Journal volume & issue
Vol. 103
p. 10010

Abstract

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The source of time-correlated photon-pairs at 1064 nm is described. The source consists of the spontaneous parametric down-conversion (SPDC) generator, pumped by cw laser operating at 532 nm, and the measuring and control appliances. One of the main parts of the electronic systems is the “time-to-digital converter” which is designed and built by our group. The system allows to create and detect correlation of photon pairs with resolution better than 1 ns. We adduce the results of a quantum key distribution through open air. The key length was about 5000 bits and the accuracy ~0.1%.

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