@article{11976,
  author = {Edward Marti and Ross Hutson and Akihisa Goban and Sara Campbell and Nicola Poli and Jun Ye},
  title = {Imaging Optical Frequencies with 100 μHz Precision and 1.1 μm Resolution},
  abstract = {We implement imaging spectroscopy of the optical clock transition of lattice-trapped degenerate fermionic Sr in the Mott-insulating regime, combining micron spatial resolution with submillihertz spectral precision. We use these tools to demonstrate atomic coherence for up to 15 s on the clock transition and reach a record frequency precision of 2.5 x 10<sup>-19</sup>. We perform the most rapid evaluation of trapping light shifts and record a 150 mHz linewidth, the narrowest Rabi line shape observed on a coherent optical transition. The important emerging capability of combining high-resolution imaging and spectroscopy will improve the clock precision, and provide a path towards measuring many-body interactions and testing fundamental physics.},
  year = {2018},
  journal = {Physical Review Letters},
  volume = {120},
  chapter = {103201},
  pages = {103201},
  month = {2018-03},
  issn = {0031-9007},
  url = {https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.120.103201},
  doi = {10.1103/PhysRevLett.120.103201},
}