Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 24: Quantum Information (Quantum Computing)
Q 24.6: Talk
Wednesday, March 11, 2020, 12:30–12:45, e001
Robust and resource efficient entangling gate with amplitude modulation of microwave near-fields — •Giorgio Zarantonello1,2, Henning Hahn1,2, Jonathan Morgner1,2, Marius Schulte3, Amado Bautista-Salvador2,1, Reinhard Werner3, Klemens Hammerer3, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover — 2PTB, Bundesallee 100, 38116 Braunschweig — 3Institut für Theoretische Physik, Leibniz Universität Hannover, Appelstr. 2, 30167 Hannover
The DiVincenzo criteria [1] define the requirements for quantum computing specifically the need for a universal set of quantum gates. This is satisfied by the ability to perform single qubit gates and a two qubit entangling gate. We implement such operations using near-field microwaves [2] in a surface-electrode ion trap using embedded microwave conductors. In this talk we will present a coherent control method based on amplitude modulation of the microwaves which has so far allowed to obtain Bell state infidelities in the 10−3 range [4].
[1] D. P. DiVincenzo, Fortschritte der Physik, 48, 771-783(2000)
[2] C. Ospelkaus et al., Nature 476, 181 (2011)
[3] D.J. Wineland et al., J. Res. NIST. 103, 259-328 (1998)
[4] G. Zarantonello et al., arXiv:1911.03954 [quant-ph]