Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 38: Trapped Ions (joint session Q/A)
A 38.6: Talk
Friday, March 15, 2024, 12:30–12:45, HS 1199
Optical integration in ion-trap chips at Infineon — •Alexander Zesar1,2, Jakob Wahl2,3, Bernhard Lamprecht5, Philipp Hurdax5, Klemens Schüppert2, Clemens Rössler2, Yves Colombe2, Silke Auchter2, Sofia Cano Castro2,6, Max Glantschnig2,7, Marco Schmauser3, Marco Valentini3, Philipp Schindler3, Thomas Monz3,4, and Joachim Krenn1 — 1University of Graz, Graz, Austria — 2Infineon Technologies Austria AG, Villach, Austria — 3University of Innsbruck, Innsbruck, Austria — 4Alpine Quantum Technologies GmbH, Innsbruck, Austria — 5Joanneum Research Materials, Weiz, Austria — 6Polytecnico di Milano, Milan, Italy — 7Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
Trapped ions are among the most researched and advanced quantum computing (QC) hardware platforms. Currently used free-space optics for ion addressing will block upscaling due to beam pointing errors and spatial restrictions. Therefore, future QC architectures with trapped ions require integrated waveguiding and focusing for scalable and stable placement of laser beams in microfabricated ion-trap chips.
This talk gives a concise overview of photonics and optics integration schemes developed at Infineon. We will discuss some of the challenges that come with femtosecond-laser-written waveguides as well as slab waveguides in conjunction with focusing grating couplers, including fiber-to-chip coupling and integration density. The talk concludes with an outlook on scalable ion-trap chips with integrated photonics as a necessary condition for useful trapped-ion quantum computing.
Keywords: Ion Trap; Trapped Ion Quantum Computing; Microfabrication; Waveguides; Integrated Photonics, Optics