Dresden 2011 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 23: Poster 2: Intersectional Session
Q 23.11: Poster
Dienstag, 15. März 2011, 18:00–21:00, P1
Quantum information transfer with trapped-ion antennae — •Regina Lechner1, Maximilian Harlander1, Michael Brownnutt1, Rainer Blatt1,2, and Wolfgang Hänsel1,2 — 1Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria — 2Institut für Quantenoptik und Quanteninformation der Österreichischen Akademie der Wissenschaften, Technikerstraße 21a, 6020 Innsbruck, Austria
To make trapped-ion quantum computing useful, scaling to many ions is imperative. One method of achieving this is to use miniaturized, segmented ion traps and by coupling ions trapped in separate wells[1]. A major obstacle to be overcome in implementing such techniques is to achieve gate operations that are much faster than the ion-heating rate which scales as d−4, where d is the distance between the ions and the electrodes. As traps are miniaturized the gate speed increases, but so do the heating rates. We solve this problem by using multiple ions in each well as antennae to increase the dipole-dipole interaction. By using three ions in each of two wells, a 7-fold increase in interaction speed is observed compared with the case of a single pair of ions[2]. The experimental setup used to implement the double-well potential is described, focusing on the generation of the low-noise voltages required to achieve suitable ion stability, and for the reduction of technical-noise-induced ion heating. References [1] Cirac, J. I. & Zoller, P.; Nature 404, 579 (2000). [2] Harlander, M., Lechner, R., Brownnutt, M., Blatt, R. & Hänsel, W.; arXiv:1011.3639v2.