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Q: Fachverband Quantenoptik und Photonik
Q 13: Posters: Quantum Optics and Photonics I
Q 13.61: Poster
Montag, 9. März 2020, 16:30–18:30, Empore Lichthof
Developments towards Microwave-driven high-fidelity Quantum logic gates in multilayer ion traps — •Jonathan Morgner1,2, Giorgio Zarantonello1,2, Nicolás Pulido1,2, Henning Hahn2,1, Amado Bautista-Salvador2,1, and Christian Ospelkaus1,2 — 1Leibniz Universität Hannover, Institut für Quantenoptik — 2Physikalisch-Technische Bundesanstalt, Braunschweig
Scalable quantum computation relies on a universal set of high-fidelity gate operations. Surface-electrode ion traps combined with the microwave near-field approach [1] are a promising candidate for both scalability and high-fidelity operations [2, 3].
In this poster, multiple developments for reducing radial mode errors are presented. A pulse shaped microwave two-qubit gate-scheme for resilience against radial mode instabilities is presented. Two-qubit gates with fidelities above 99.5% using this modulation-scheme were recently reported [4].
Furthermore, a setup - currently under construction - is presented, where Ar+ bombardment will be used to clean the electrode surface from contaminants, which has been shown to reduce the heating rate of trapped ions [5].
References:
[1] C. Ospelkaus et al., Phys. Rev. Lett. 101 090502 (2008)
[2] T. P. Harty et al., Phys. Rev. Lett. 117, 140501 (2016)
[3] A. Bautista-Salvador et al., New. J. Phys. 21 043011 (2019)
[4] G. Zarantonello et al., arXiv:1911.03954 (2019)
[5] D. A. Hite et al., Phys. Rev. Lett. 109, 103001 (2012)