@article{3661,
  author = {James Thompson},
  title = {Quantum physics: Atomic doughnuts from single photons},
  year = {2015},
  journal = {Nature},
  volume = {519},
  pages = {420-422},
  month = {2015-03},
  issn = {0028-0836},
  url = {http://www.nature.com/doifinder/10.1038/519420b},
  doi = {10.1038/519420b},
}