Tailoring photonic entanglement in high-dimensional Hilbert spaces

 Authors: H de Riedmatten, I Marcikic, V Scarani, W Tittel, H Zbinden, N Gisin Physical Review A 69, 050304 (2004) http://dx.doi.org/10.1103/PhysRevA.69.050304 We present an experiment where two photonic systems of arbitrary dimensions can be entangled. The method is based on spontaneous parametric down-conversion with trains of d pump pulses with a fixed phase relation, generated by a mode-locked laser. This leads to a photon pair created in a coherent superposition of d discrete emission times, given by the successive laser pulses. Entanglement is shown by performing a two-photon interference experiment and by observing the visibility of the interference fringes increasing as a function of the dimension d. Factors limiting the visibility, such as the presence of multiple pairs in one train, are discussed. highdimprlpublished.pdf

BibTeX Source

@Article{Riedmatten2004,
author =       "H. de Riedmatten and I. Marcikic and V. Scarani and W. Tittel and H. Zbinden and
N. Gisin",
title =        "Tailoring photonic entanglement in high-dimensional Hilbert spaces",
journal =      "Physical Review A",
year =         "2004",
volume =       "69",
pages =        "050304",
number =       "5",
abstract =     "We present an experiment where two photonic systems of arbitrary dimensions can be
entangled. The method is based on spontaneous parametric down-conversion with
trains of d pump pulses with a fixed phase relation, generated by a mode-locked
laser. This leads to a photon pair created in a coherent superposition of d
discrete emission times, given by the successive laser pulses. Entanglement is
shown by performing a two-photon interference experiment and by observing the
visibility of the interference fringes increasing as a function of the dimension d.
Factors limiting the visibility, such as the presence of multiple pairs in one
train, are discussed.",
doi =          "10.1103/PhysRevA.69.050304",
owner =        "cc",
sn =           "1050-2947",
timestamp =    "2010.08.20",
ut =           "WOS:000221813700005",
}