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- Title
Prospective Optical Lattice Clocks in Neutral Atoms with Hyperfine Structure.
- Authors
Bothwell, Tobias
- Abstract
Optical lattice clocks combine the accuracy and stability required for next-generation frequency standards. At the heart of these clocks are carefully engineered optical lattices tuned to a wavelength where the differential AC Stark shift between ground and excited states vanishes—the so called 'magic' wavelength. To date, only alkaline-earth-like atoms utilizing clock transitions with total electronic angular momentum J = 0 have successfully realized these magic wavelength optical lattices at the level necessary for state-of-the-art clock operation. In this article, we discuss two additional types of clock transitions utilizing states with J ≠ 0 , leveraging hyperfine structure to satisfy the necessary requirements for controlling lattice-induced light shifts. We propose realizing (i) clock transitions between same-parity clock states with total angular momentum F = 0 and (ii) M1/E2 clock transitions between a state with F = 0 and a second state with J = 1 / 2 , m F = 0 . We present atomic species which fulfill these requirements before giving a detailed discussion of both manganese and copper, demonstrating how these transitions provide the necessary suppression of fine structure-induced vector and tensor lattice light shifts for clock operations. Such realization of alternative optical lattice clocks promises to provide a rich variety of new atomic species for neutral atom clock operation, with applications from many-body physics to searches for new physics.
- Subjects
ATOMIC clocks; OPTICAL lattices; HYPERFINE structure; RIESZ spaces; FREQUENCY standards; EXCITED states
- Publication
Atoms (2218-2004), 2024, Vol 12, Issue 3, p14
- ISSN
2218-2004
- Publication type
Article
- DOI
10.3390/atoms12030014