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 2.5×10-19. 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.
Original language | English |
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Article number | 103201 |
Journal | Physical Review Letters |
Volume | 120 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2018 Mar 5 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)