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 = {Martin, Anthony and Guerreiro, Thiago and Tiranov, Alexey and Designolle, S\'ebastien and Fr\"owis, Florian and Brunner, Nicolas and Huber, Marcus and Gisin, Nicolas},
  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.}
}