Scientific Results

Imaging Optical Frequencies with 100 mu Hz Precision and 1.1 mu m Resolution

Year: 2018

Authors: Marti GE., Hutson RB., Goban A., Campbell SL., Poli N., Ye J.

Autors Affiliation: [Marti, G. Edward; Hutson, Ross B.; Goban, Akihisa; Campbell, Sara L.; Ye, Jun] NIST, JILA, 440 UCB, Boulder, CO 80309 USA and Univ Colorado, 440 UCB, Boulder, CO 80309 USA and Univ Colorado, Dept Phys, 390 UCB, Boulder, CO 80309 USA.
[Poli, Nicola] Univ Firenze, Dipartimento Fis & Astron, INFN, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, Italy and Univ Firenze, LENS, INFN, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, Italy and CNR, INO, Largo Enrico Fermi 6, I-50125 Florence, Italy.

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(-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.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 120 (10)      Pages from: 103201-1  to: 103201-6

KeyWords: lattice clock; fermions; magnetism; atoms;
DOI: 10.1103/PhysRevLett.120.103201

Citations: 40
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