Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 71: Quantum Control II (joint session QI/Q)
Q 71.5: Vortrag
Freitag, 14. März 2025, 12:00–12:15, HS II
Cryogenic microwave generator for quantum information processing with trapped ions — •Sebastian Halama1, Peter Toth2, Marco Bonkowski1, and Christian Ospelkaus1,3 — 1Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, 30167 Hannover, Germany — 2Technische Universität Braunschweig, Institut für CMOS Design, Hans-Sommer-Str. 66, 38106 Braunschweig — 3Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig
Scaling up quantum computers to a higher number of qubits while maintaining control of all qubit states is still a major challenge. Surface-electrode ion traps are a promising platform for such a large-scale quantum computer. With the microwave near-field approach [1], qubit control realized by microwave conductors that are integrated into the ion trap naturally scale with the trap itself. However, the microwave signal generation currently takes place outside of the vacuum chamber in which the ion trap is located. Here we report on the design of a cryogenic three-channel microwave generator with amplitude modulation capabilities and its co-integrating with a surface-electrode ion trap on a common chip carrier. We present first measurements taken with the cryogenic microwave generator and discuss further steps of the experiment.
[1] Ospelkaus et. al, Phys. Rev. Lett. 101, 090502 (2008)
Keywords: Quantum Computer; Cryogenic electronic; Surface-electrode ion trap