Quantifying Photonic High-Dimensional Entanglement

Authors:Anthony Martin, Thiago Guerreiro, Alexey Tiranov, Sébastien Designolle, Florian Fröwis, Nicolas Brunner, Marcus Huber, Nicolas Gisin
Journal:Phys. Rev. Lett. 118, 110501 (2017)
DOI:http://dx.doi.org/10.1103/PhysRevLett.118.110501
Abstract:High-dimensional entanglement offers promising perspectives in quantum information science. In practice, however, the main challenge is to devise efficient methods to characterize high-dimensional entanglement, based on the available experimental data which is usually rather limited. Here we report the characterization and certification of high-dimensional entanglement in photon pairs, encoded in temporal modes. Building upon recently developed theoretical methods, we certify an entanglement of formation of 2.09(7) ebits in a time-bin implementation, and 4.1(1) ebits in an energy-time implementation. These results are based on very limited sets of local measurements, which illustrates the practical relevance of these methods.
File:martin2017a.pdf

BibTeX Source

@Article{PhysRevLett.118.110501,
  title =        "Quantifying Photonic High-Dimensional Entanglement",
  author =       "Anthony Martin and Thiago Guerreiro and Alexey Tiranov and S\'ebastien Designolle
                 and Florian Fr{\"o}wis and Nicolas Brunner and Marcus Huber and Nicolas Gisin",
  journal =      "Phys. Rev. Lett.",
  volume =       "118",
  issue =        "11",
  pages =        "110501",
  numpages =     "5",
  year =         "2017",
  month =        mar,
  publisher =    "American Physical Society",
  doi =          "10.1103/PhysRevLett.118.110501",
  URL =          "https://link.aps.org/doi/10.1103/PhysRevLett.118.110501",
  abstract =     "High-dimensional entanglement offers promising perspectives in quantum information
                 science. In practice, however, the main challenge is to devise efficient methods to
                 characterize high-dimensional entanglement, based on the available experimental
                 data which is usually rather limited. Here we report the characterization and
                 certification of high-dimensional entanglement in photon pairs, encoded in temporal
                 modes. Building upon recently developed theoretical methods, we certify an
                 entanglement of formation of 2.09(7) ebits in a time-bin implementation, and 4.1(1)
                 ebits in an energy-time implementation. These results are based on very limited
                 sets of local measurements, which illustrates the practical relevance of these
                 methods.",
}