Quantum entanglement with acousto-optic modulators: Two-photon beats and Bell experiments with moving beam splitters

Authors:A Stefanov, H Zbinden, N Gisin, A Suarez
Journal:Physical Review A 67, 042115 (2003)
DOI:http://dx.doi.org/10.1103/PhysRevA.67.042115
Abstract:We present an experiment testing quantum correlations with frequency shifted photons. We test Bell inequality with two-photon interferometry where we replace the beam splitters with acousto-optic modulators, which are equivalent to moving beam splitters. We measure the two-photon beats induced by the frequency shifts, and we propose a cryptographic scheme in relation. Finally, setting the experiment in a relativistic configuration, we demonstrate that the quantum correlations are not only independent of the distance but also of the time ordering between the two single-photon measurements.
File:pra42115.pdf

BibTeX Source

@Article{Stefanov2003,
  author =       "A. Stefanov and H. Zbinden and N. Gisin and A. Suarez",
  title =        "Quantum entanglement with acousto-optic modulators: Two-photon beats and Bell
                 experiments with moving beam splitters",
  journal =      "Physical Review A",
  year =         "2003",
  volume =       "67",
  pages =        "042115",
  number =       "4",
  abstract =     "We present an experiment testing quantum correlations with frequency shifted
                 photons. We test Bell inequality with two-photon interferometry where we replace
                 the beam splitters with acousto-optic modulators, which are equivalent to moving
                 beam splitters. We measure the two-photon beats induced by the frequency shifts,
                 and we propose a cryptographic scheme in relation. Finally, setting the experiment
                 in a relativistic configuration, we demonstrate that the quantum correlations are
                 not only independent of the distance but also of the time ordering between the two
                 single-photon measurements.",
  doi =          "10.1103/PhysRevA.67.042115",
  owner =        "cc",
  sn =           "1050-2947",
  timestamp =    "2010.08.20",
  ut =           "WOS:000182604300036",
}