Imaging Optical Frequencies with 100 μhz Precision and 1.1 μm Resolution

Year: 2018

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

Autors Affiliation: NIST, JILA, 440 UCB, Boulder, CO 80309 USA; Univ Colorado, 440 UCB, Boulder, CO 80309 USA; Univ Colorado, Dept Phys, 390 UCB, Boulder, CO 80309 USA; Univ Firenze, Dipartimento Fis & Astron, INFN, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, Italy; Univ Firenze, LENS, INFN, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, Italy; 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

More Information: We acknowledge technical contributions from W. Milner, E. Oelker, J. Robinson, L. Sonderhouse, W. Zhang, and useful discussions with T. Bothwell, S. Bromley, C. Kennedy, D. Kedar, S. Kolkowitz. This work is supported by NIST, DARPA, AFOSR-MURI, and the NSF JILA Physics Frontier Center (NSF PHY-1734006). G.E.M. is supported by a postdoctoral fellowship from the National Research Council and A.G. is supported by a postdoctoral fellowship from the Japan Society for the Promotion of Science. N.P. is partially supported by the JILA Visiting Fellowsh ip.
KeyWords: Lattice Clock; Fermions; Magnetism; Atoms
DOI: 10.1103/PhysRevLett.120.103201

Citations: 133
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