@article{4023,
  author = {Martin Gärttner and Justin Bohnet and Arghavan Safavi-Naini and Michael Wall and John Bollinger and Ana Maria Rey},
  title = {Measuring out-of-time-order correlations and multiple quantum spectra in a trapped-ion quantum magnet},
  year = {2017},
  journal = {Nature Physics},
  volume = {13739},
  chapter = {781},
  pages = {781-786},
  month = {2017-05},
  issn = {1745-2473},
  url = {http://www.nature.com/doifinder/10.1038/nphys4119},
  doi = {10.1038/nphys4119},
}