https://doi.org/10.1051/epjconf/202226613032
Chip integrated photonics for ion based quantum computing
1 Institut für Halbleitertechnik, Technische Universität Braunschweig, Hans-Sommer-Str. 66, 38106 Braunschweig, Germany
2 Laboratory for Emerging Nanometrology, Langer Kamp 6a/b, 38106 Braunschweig, Germany
3 Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
4 Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
5 DLR-Institut für Satellitengeodäsie und Inertialsensorik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
* e-mail: steffen.sauer@tu-braunschweig.de
Published online: 13 October 2022
Ion traps are a promising platform for the realisation of high-performance quantum computers. To enable the future scalability of these systems, integrated photonic solutions for guiding and manipulating the laser light at chip level are a major step. Such passive optical components offer the great advantage of providing beam radii in the μm range at the location of the ions without increasing the number of bulk optics. Different wavelengths, from UV to NIR, as well as laser beam properties, such as angle or polarisation, are required for different cooling and readout processes of ions. We present simulation results for different optical photonic components, such as grating outcouplers or waveguide splitters and their applications on ion trap chips. Furthermore, we will introduce the experimental setup for the optical characterisation of the fabricated structures.
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