@Article{Bustard2017,
  author        = {Bustard, P.J. and England, D.G. and Heshami, K. and Kupchak, C. and Sussman, B.J.},
  journal       = {Physical Review A},
  title         = {Quantum frequency conversion with ultra-broadband tuning in a Raman memory},
  year          = {2017},
  number        = {5},
  volume        = {95},
  abstract      = {Quantum frequency conversion is a powerful tool for the construction of hybrid quantum photonic technologies. Raman quantum memories are a promising method of conversion due to their broad bandwidths. Here we demonstrate frequency conversion of THz-bandwidth, fs-duration photons at the single-photon level using a Raman quantum memory based on the rotational levels of hydrogen molecules. We shift photons from 765 nm to wavelengths spanning from 673 to 590 nm - an absolute shift of up to 116 THz. We measure total conversion efficiencies of up to 10% and a maximum signal-to-noise ratio of 4.0(1):1, giving an expected conditional fidelity of 0.75, which exceeds the classical threshold of 2/3. Thermal noise could be eliminated by cooling with liquid nitrogen, giving noiseless conversion with wide tunability in the visible and infrared. {\copyright} 2017 American Physical Society.},
  affiliation   = {National Research Council of Canada, 100 Sussex Drive, Ottawa, ON, Canada; Department of Physics, University of Ottawa, Ottawa, ON, Canada},
  art_number    = {053816},
  document_type = {Article},
  doi           = {10.1103/PhysRevA.95.053816},
  groups        = {[paul:]},
  source        = {Scopus},
  timestamp     = {2018.07.12},
  url           = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026811427&doi=10.1103%2fPhysRevA.95.053816&partnerID=40&md5=bb46367e7043844ddf47d7922a010887},
}

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