SAMOP 2023 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 8: QI Poster I (joint session QI/Q)

Q 8.47: Poster

Montag, 6. März 2023, 16:30–19:00, Empore Lichthof

QVLS Q1 supporting experiment for development of techniques for ion transport and sympathetic cooling — •Christian Joohs^{1, 2}, Markus Duwe^{1, 2}, Yannick Hermann^{1, 2}, Ludwig Krinner^{1, 2}, and Christian Ospelkaus^{1, 2} — ¹Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover — ²PTB, Bundesallee 100, 38116 Braunschweig

Within the ongoing development of the ion-based quantum computer Q1 carried out by QVLS (Quantum Valley Lower Saxony), a supporting experiment is being built and used for research and development of transport and cooling techniques. The trap is experimentally realised by a surface electrode Paul trap, which allows movement of trapped ions in a two-dimensional space above the trap. This possibility is used to realise the computer in a register-like fashion (termed QCCD architecture [1,2]) by having different zones on the trap chip that account for different tasks including storage, readout, and quantum logic gate application. A key aspect therefore is the development of ion transport techniques between said zones while maintaining a low heating rate and without interruption of the ion’s electronic quantum state. Furthermore, we study the possibility to sympathetically cool two logic ions with a single cooling ion of significantly heavier mass. We report on previous progress and goals.

[1] D.J. Wineland et al., J. Res. Natl. Inst. Stand. Technol. 103, 259 (1998)

[2] D. Kielpinski, C. Monroe, and D. J. Wineland, Nature 417, 709 (2002)