Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 41: Quantum Technologies (Color Centers and Ion Traps) I (joint session Q/QI)
Q 41.4: Vortrag
Mittwoch, 12. März 2025, 15:30–15:45, HS Botanik
Micro fabricated ion trap with integrated optics — •Jakob Wahl1,2, Alexander Zesar1,3, Marco Schmauser2, Martin van Mourik2, Marco Valentini2, Klemens Schüppert1, Clemens Rössler1, Philipp Schindler2, and Christian Roos2 — 1Infineon Technologies Austria — 2Universität Innsbruck — 3Technische Universität Graz
Trapped ions have shown great promise as a platform for quantum computing, with long coherence time, high fidelity quantum logic gates, and the successful implementation of quantum algorithms. However, to take trapped-ion quantum computers from laboratory setups to practical devices for solving real-world problems, the number of controllable qubits must be increased while improving error rates. One of the major challenges for scaling trapped-ion quantum computers is the need to switch from free-space to integrated optics, to achieve lower drift and vibrations of light relative to the ion, and therefore more stable and scalable ion-addressing.
In this talk, we show an ion trap produced at Infineon's industrial semiconductor facilities that has integrated femtosecond laser-written waveguides. We show details of the fabrication and present recent measurements and results on the performance of the trap. We compare the trapping behavior with and without the integrated features that expose dielectric to the ion, and potentially increase stray fields and heating rates. This work paves the way towards ion traps with robust and integrated ion addressing.
Keywords: Quantum computing; Surface ion traps; Microfabricated traps