Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 15: Poster I
A 15.6: Poster
Tuesday, March 12, 2024, 17:00–19:00, Tent A
Towards quantum logic spectroscopy of heavy few-electron ions — •Peter Micke1,2,3, Zoran Andelkovic2, and Thomas Stöhlker1,2,3 — 1Helmholtz Institute Jena — 2GSI Helmholtz Center for Heavy Ion Research, Darmstadt — 3Institute of Optics and Quantum Electronics, Friedrich Schiller University Jena
Heavy highly charged ions (HCI), e.g. hydrogen-like or lithium-like ions, have forbidden optical transitions in their ground-state hyperfine structure and feature the strongest electromagnetic fields to which we have access in a lab on earth. Therefore, these optical transitions are excellent probes for tests of fundamental physics and offer enhanced sensitivities to search for physics beyond the standard models of particle physics and cosmology. Furthermore, many systematic shifts of these transitions are highly suppressed, making heavy HCI ideal systems for the use in novel high-accuracy optical atomic clocks.
Upon recent advances in precision spectroscopy [1] and clock operation [2] with medium-light HCI of intermediate charge state (40Ar13+), we are setting up a unique and versatile spectroscopy platform at the HITRAP facility of GSI which combines the powerful heavy-ion accelerators with quantum logic spectroscopy in a cryogenic Paul trap. This will enable frequency metrology of heavy HCI, such as 207Pb81+ with a clock transition at 1019.7 nm. The state-of-the-art uncertainty can be improved by many orders of magnitude and unprecedented tests of atomic, nuclear, and fundamental physics become available.
[1] P. Micke et al., Nature 578, 60–65 (2020), [2] S. A. King et at. Nature 611, 43–47 (2022). — PhD positions available! —
Keywords: Highly charged ions; Quantum logic; Clocks; Spectroscopy; Fundamental physics