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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster – Quantum Information Technologies (joint session Q/QI)

Q 62.34: Poster

Donnerstag, 13. März 2025, 17:00–19:00, Tent

Multiplexing and Signal Optimization in Surface-Electrode Ion Trap Quantum Processors — •Janina Bätge¹, Florian Ungerechts¹, Rodrigo Munoz¹, Mohammad Masum Billah¹, Axel Hoffmann^1,2, Giorgio Zarantonello^1,3, and Christian Ospelkaus^1,4 — ¹Institut für Quantenoptik, Leibniz Universität Hannover, Germany — ²Institut für Hochfrequenztechnik und Funksysteme, Leibniz Universität Hannover, Germany — ³QUDORA Technologies GmbH, Braunschweig, Germany — ⁴Physikalisch-Technische Bundesanstalt, Braunschweig, Germany

Scaling up ion trap quantum processors requires efficient management of control signals for the increasing number of control electrodes. We present three methods to minimize the number of signals by controlling multiple electrodes with shared inputs. The first method uses a bucket brigade for ion storage. The second employs switching electronics to sequentially charge multiple electrodes with a single signal. The final method uses switches to multiplex the control signals for ion transport through an X-junction. In this approach, it is crucial to optimize the assignment of electrodes to signals and determine the minimal number of signals needed for efficient shuttling.

Keywords: quantum information processing; trapped ions; QCCD architecture; ion transport