@article{2401,
  keywords = {pfc},
  author = {J. Teufel and T. Donner and M. Castellanos-Beltran and J. Harlow and Konrad Lehnert},
  title = {Nanomechanical motion measured with an imprecision below that at the standard quantum limit},
  year = {2009},
  journal = {Nature Nanotechnology},
  volume = {4},
  pages = {820-823},
  month = {2009-12},
  issn = {1748-3387},
  doi = {10.1038/nnano.2009.343},
}