SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 8: QI Poster I (joint session QI/Q)
Q 8.48: Poster
Montag, 6. März 2023, 16:30–19:00, Empore Lichthof
Towards a fault tolerant microwave-driven two qubit quantum processor — •Markus Duwe1,2, Hardik Mendpara1,2, Nicolas Pulido-Mateo1,2, Ludwig Krinner1,2, Giorgio Zarantonello3, Amado Bautista-Salvador1,2, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover — 2Physikalisch-Technische Bundesanstalt, Braunschweig — 3National Institute of Standards and Technology, Boulder, USA
A universal quantum gate set can be realized by the combination of single-qubit gates and one entangling operation. In this work, we realize such a gate set using the microwave near field approach [1]. We trap two 9Be+ ions
in a radio-frequency surface electrode trap and perform the quantum logic operations with embedded microwave conductors. The individual qubits are addressed by micromotion sidebands [2] and the entangling gate is performed via a Mølmer-Sørensen type interaction. We approach an infidelity of 10−4 with single qubit gates and 10−3 with entangling gates using partial tomography [3]. We report on challenges and solutions for further improving the gate fidelities and to characterize gate errors.
[1] C. Ospelkaus et al., Phys. Rev. Lett. 9, 090502 (2008)
[2] U. Warring et al., Phys. Rev. Lett. 17, 173002 (2013)
[3] M. Duwe et al., Quantum Sci. Technol. 7, 045005 (2022)