Bonn 2025 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 48: Poster – Quantum Optics, Technologies, and Optomechanics

Q 48.54: Poster

Mittwoch, 12. März 2025, 17:00–19:00, Tent

Experimental set up for Trapped-Ion Experiments Using a Microfabricated Surface Paul Trap — •Radhika Goyal, Tobias Pootz, David Stuhrmann, Celeste Torkzaban, and Christian Ospelkaus — Institute for Quantum Optics LUH, Hannover, Germany

With state of the art coherence times as well as gate fidelity demonstrations, trapped ions have become a cornerstone in the world of quantum computing. Ions can be trapped using various schemes, out of which microfabricated Surface Paul traps stand distinguished in QC applications for their compactness and scalability.

To house such a trap, we present a cryogenic vacuum setup designed for enhanced ion confinement and reduced environmental noise. The system features a custom-built cryostat operating at temperatures below 10 K and achieving ultra-high vacuum (UHV) levels of the order of 10e-8 mBar.

The system features multiple optical viewports for laser addressing, high-frequency RF electronics for trap operation, as well as an optical system to image the ions. This poster will detail the design, challenges, and performance benchmarks of the system, offering insights into its application in cutting-edge quantum research.

Keywords: Cryogenics; Ultra high vacuum; Experimental set up; Ion trapping; Quantum computing demonstrator