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QI: Fachverband Quanteninformation

QI 23: Poster II (joint session QI/Q)

QI 23.40: Poster

Wednesday, March 8, 2023, 16:30–19:00, Empore Lichthof

Near Field Modeling for Quantum Gate Operation — •Axel Hoffmann¹, Florian Ungerechts², Rodrigo Munoz², Brigitte Kaune², Teresa Meiners², Christian Ospelkaus^2,3, and Dirk Manteuffel¹ — ¹Institut für Hochfrequenztechnik, Hannover, Leibniz Universität Hannover — ²Institut für Quantenoptik, Hannover, Leibniz Universität Hannober — ³PTB Braunschweig, Braunschweig

Surface-electrode ion traps with integrated microwave conductors for near-field quantum control are a promising approach for scaleable quantum computers. The goal of the QVLS-Q1 Project is to realize a scaleable quantum computer based on surface-electrode ion traps. Realizing quantum gate operations with magnetic near-field control comes with high demands on the electromagnetic field design, regarding spatial field distribution and radiation efficiency. Typically the wave length of the gate frequency is much larger than the entire application. Therefore common criteria to design efficient radiating structures can not be applied in a straight forward way. Additionally the spatial distribution, especially the position of the field minimum, is constrained to match specific requirements. These challenges will be discussed in this poster, emphasizing on the possibilities to face the complex goal of minimizing gate errors. A systematic approach will be shown including advanced simulation approaches.