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Q: Fachverband Quantenoptik und Photonik

Q 59: Precision Measurements and Metrology II (joint session Q/A)

Q 59.2: Poster

Donnerstag, 17. März 2022, 16:30–18:30, P

Towards magneto-optical trapping of Zinc — •Marc Vöhringer Carrera, David Röser, and Simon Stellmer — Physikalisches Institut, University of Bonn, Germany

In the pursuit of increasingly precise time and frequency standards, optical lattice clocks belong to the prime candidates. Among the various approaches and elements currently under investigation, it remains unclear which element will eventually turn out to be the most suitable for the numerous applications.

We investigate the element Zinc as a potential candidate for an optical lattice clock. This study is motivated by various favorable properties of Zinc, including a very low sensitivity to black-body radiation shifts [1]. Its core advantage however is the possible derivation of its clock transition frequency as the fifth harmonic of 1547.5 nm [2], lying in the telecom C-band, thus allowing convenient frequency transfer via optical fibers.

To construct an optical lattice clock based on Zinc, many challenges lie ahead. One of them is the construction of a 214 nm laser system for the first cooling stage, as well as the implementation of a two-stage MOT. We report on progress from the lab regarding these challenges.

[1] Dzuba et al., J. Phys. B 52, 215005 (2019)
[2] Büki et al., Appl. Opt. 60, 9915-9918 (2021)