Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 37: Poster III
Q 37.13: Poster
Wednesday, March 13, 2024, 17:00–19:00, Tent B
Analysis of motional heating during ion-transport through RF junctions in a surface-electrode Paul trap — •Phil Nuschke1, Florian Ungerechts1, Rodrigo Munoz1, Janina Bätge1, Axel Hoffmann1,2, Teresa Meiners1, Brigitte Kaune1, and Christian Ospelkaus1,3 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany — 2Institut für Hochfrequenztechnik und Funksysteme, Leibniz Universität Hannover, Appelstraße 9a, 30167 Hannover, Ger- many — 3Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
Ion transport through RF junctions is essential for the scaling of trapped-ion quantum processors in the QCCD architecture. It is crucial to minimise the heating rates during ion transport through an RF junction to avoid excessive overhead in sympathetic re-cooling. This becomes increasingly important the greater the number of qubits, since transport times become a limiting factor. The interplay of transport speed and heating is complex and comprises effects from anomalous heating, pseudopotential gradient heating, non-adabaticities imperfect transport waveform realizations. Here we discuss estimates of pseudopotential gradient heating vs. anomalous heating as a function of transport speed.
Keywords: quantum information processing; trapped ions; QCCD architecture; RF junctions; ion transport