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Q: Fachverband Quantenoptik und Photonik
Q 35: Quantum Computing and Simulation IV
Q 35.5: Vortrag
Mittwoch, 4. März 2026, 15:45–16:00, P 10
Development of a Cryogenic Ytterbium Tweezer Array and Modulation Transfer Spectroscopy of the 1S0 → 3P1 Transition — •Julian Feiler1,2, Meng Gu3, Konrad Koenigsmann3, Jin Yang3, Max Hachmann1,2, and Peter Schauss1,2,3 — 1Institute for Quantum Physics, University of Hamburg, Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany — 3Department of Physics, University of Virginia, Charlottesville, USA
Alkaline-earth-like atoms are a common choice for ultracold neutral atom quantum simulators as well as universal quantum computers. Due to its nuclear spin of 1/2, fermionic 171Yb incorporates a natural two-level system with a very long lifetime, which can be utilized as a qubit.
The objective of the presented experiment is the development of a cryogenic Yb tweezer array for quantum computing. In practice, the assembly of large arrays is limited by the trapping lifetime of the atoms in the optical tweezers. By using a cryogenic shield, collision rates of trapped atoms with background gas atoms can be decreased by several orders of magnitude. Correspondingly, the lifetime of the Yb atoms should increase from minute-scales up to many hours.
We report on the recent progress of the experiment and show data derived from modulation transfer spectroscopy of the 1S0 → 3P1 transition of Yb in a vapor cell. The Zeeman splitting of 171Yb and 173Yb is also studied and shows significant deviations from linear Zeeman effect calculations at intermediate magnetic fields of less than 60 G.
Keywords: Optical Tweezer Arrays; Quantum Computing; Cryogenics; Modulation Transfer Spectroscopy