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Imaging Optical Frequencies with 100 μHz Precision and 1.1 μm Resolution

TitleImaging Optical Frequencies with 100 μHz Precision and 1.1 μm Resolution
Publication TypeJournal Article
Year of Publication2018
AuthorsG. Marti, E, Hutson, RB, Goban, A, Campbell, SL, Poli, N, Ye, J
JournalPhysical Review Letters
Date PublishedJan-03-2018

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 TitlePhys. Rev. Lett.

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