# 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 Physical Review A 67, 042115 (2003) http://dx.doi.org/10.1103/PhysRevA.67.042115 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. 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",
}