|Title||Imaging Optical Frequencies with 100 μHz Precision and 1.1 μm Resolution|
|Publication Type||Journal Article|
|Year of Publication||2018|
|Authors||G. Marti, E, Hutson, RB, Goban, A, Campbell, SL, Poli, N, Ye, J|
|Journal||Physical Review Letters|
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 × 10−19. 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.
|Short Title||Phys. Rev. Lett.|