SAMOP 2023 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 24: Integrated Photonics II (joint session Q/QI)
QI 24.8: Vortrag
Mittwoch, 8. März 2023, 18:45–19:00, A320
Light manipulation via integrated focusing grating couplers for quantum computing applications — •Anastasiia Sorokina1,2, Guochun Du3, Pascal Gehrmann1,2, Carl- Frederik Grimpe3, Steffen Sauer1,2, Elena Jordan3, Tanja Mehlstäubler3,4,5, and Stefanie Kroker1,2,3 — 1Institut für Halbleitertechnik, Technische Universität Braunschweig, Braunschweig, Germany — 2Laboratory for Emerging Nanometrology, Braunschweig, Germany — 3Physikalisch-Technische Bundesanstalt, Braunschweig, Germany — 4Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany — 5Laboratorium für Nanound Quantenengineering, Leibniz Universität Hannover, Hannover, Germany
Downsizing optical components to control ion species in quantum computation is a vital turning point. Integrating routing and focusing elements into the chip architecture can substantially suppress environmental distortions and boost scalability. We investigated integrated waveguides and grating couplers to produce a linearly polarised Gaussian beam with a predefined emission angle, focus height and the size of the beam at this position. The studies were carried out using Lumerical FDTD simulation software and a subsequent post-processing routine. To address the different wavelengths required for the entire operation of the ion-based QCs, we have evaluated the capabilities and performance of our structures by taking advantage of the two most promising material platforms: Si3N4 and AlN. Our results can help overcome current limitations toward the multi-ion quantum system.