Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 53: Poster: Quantum Optics and Photonics III
Q 53.45: Poster
Donnerstag, 9. März 2017, 17:00–19:00, P OG2
Near-field microwave control of trapped ions for scalable quantum simulation and quantum information processing — •G. Zarantonello1,2, H. Hahn1,2, S. Grondkowski1, T. Dubielzig1, F. Ude1, M. Wahnschaffe2,1, A. Bautista-Salvador2,1, and C. Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover — 2PTB, Bundesallee 100, 38116 Braunschweig
Recent experiments have shown promising approaches to quantum simulation and information processing with trapped ions using microwave fields rather than the commonly used focused laser beams. In one approach [1], the ion’s internal states are coupled to motional states by means of microwave near-field gradients [2]. Here, we integrate a single conductor in a surface-electrode trap to generate the required near-field gradient [3]. We present finite element simulations of the magnetic field and show agreement with experimental results at the sub-micron and few-degree level within an intuitive field model [4]. We show the current experimental setup, present an enhanced, multi-layer ion trap and corresponding field simulations with improved near-field characteristics. We also discuss a new vacuum system with built-in Ar+ bombardment for surface electrode cleaning to suppress motional heating.
[1] C. Ospelkaus et al., Nature 476, 181 (2011).
[2] C. Ospelkaus et al., Phys. Rev. Lett. 101, 090502 (2008).
[3] M. Carsjens et al., Appl. Phys. B 114, 243 (2014).
[4] M. Wahnschaffe et al., arXiv:1601.06460v2 [quant-ph] (2016).