Hamburg 2009 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Quanteninformation: Atome und Ionen III
Q 58.5: Vortrag
Freitag, 6. März 2009, 11:30–11:45, VMP 6 HS-A
Deterministic reordering of 40Ca+ ions in a linear, segmented Paultrap — •Maximilian Harlander1, Michael Brownnutt1, Felicity Splatt1, Wolfgang Hänsel1, and Rainer Blatt1,2 — 1Institut für Experimentalphysik, Universität Innsbruck, Austria — 2Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Innsbruck, Austria
Segmented ion traps are one of the most promising candidates for a quantum computer technology. In such a system, ions must be shuttled and sorted into different arrangements, dependent on the algorithm being used [1]. The ability to deterministically reorder ions within a linear string is therefore a crucial building block for ion quantum computation in segmented traps. Earlier experiments have demonstrated a success rate of 24% for the exchange of two ions in complex trap structures with junctions [2].
In this experiment, we perform the exchange of two 40Ca+ ions in a linear, segmented surface ion trap by rotating the ion string about its centre. Using a simple trap structure, rotations can be achieved by applying appropriate DC voltages in addition to the strictly-linear RF potential. An exchange fidelity of 98% is obtained, and the ion heating is below 1 meV per exchange. This method has also been shown to work with ions of differing masses. [1] D. Kielpinski, C. Monroe, and D.J. Wineland, Nature 417 709 (2002) [2] W.K. Hensinger, S. Olmschenk, D. Stick, D. Hucul, M. Yeo, M. Acton, L. Deslauriers, and C. Monroe, Appl.Phys.Lett 88 034101 (2006)