BibTeX Source

@Article{Sangouard11,
  title =        "Faithful Entanglement Swapping Based on Sum-Frequency Generation",
  author =       "Nicolas Sangouard and Bruno Sanguinetti and Noé Curtz and Nicolas Gisin and Rob
                 Thew and Hugo Zbinden",
  journal =      "Phys. Rev. Lett.",
  volume =       "106",
  number =       "12",
  pages =        "120403",
  numpages =     "4",
  year =         "2011",
  month =        mar,
  doi =          "10.1103/PhysRevLett.106.120403",
  publisher =    "American Physical Society",
  abstract =     "We show that an entanglement swapping operation performed with spontaneous
                 parametric down-conversion can be made faithful without postselection using
                 sum-frequency generation. This invites us to revisit the sum-frequency process and
                 from a proof-of-principle experiment, we demonstrate that it provides a realistic
                 solution for nonlinear optics at the single-photon level. This opens the way to
                 attractive alternatives to six-photon protocols based on linear optics used, e.g.,
                 for the heralded creation of maximally entangled pairs or for device-independent
                 quantum key distribution.",
}