@article{PhysRevFocus.25.24,
  title = {Atomic Clock Beats the Quantum Limit},
  author = {Monroe, Don},
  journal = {Phys. Rev. Focus},
  volume = {25},
  issue = {},
  pages = {24},
  numpages = {1},
  year = {2010},
  month = {Jun},
  doi = {10.1103/PhysRevFocus.25.24},
  url = {http://link.aps.org/doi/10.1103/PhysRevFocus.25.24},
  publisher = {American Physical Society}
}