@article{HeuerRaabeMenzel2014,
  author    = {Axel Heuer and S. Raabe and Ralf Menzel},
  title     = {Phase memory across two single-photon interferometers including wavelength conversion},
  journal   = {Physical review : A, Atomic, molecular, and optical physics},
  volume    = {90},
  number    = {4},
  doi       = {10.1103/PhysRevA.90.045803},
  year      = {2014},
}