@misc{indiciae3e3f42f33445,
  title = {Decoherence-free quantum information processing with four-photon entangled states.},
  author = {Mohamed Bourennane and Manfred Eibl and Sascha Gaertner and Christian Kurtsiefer and Adán Cabello and Harald Weinfurter},
  year = {2004},
  doi = {10.1103/physrevlett.92.107901},
  url = {https://pubmed.ncbi.nlm.nih.gov/15089244/},
  note = {Source identifier: 15089244}
}