Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 50: Ultrakalte Atome (Einzelne Teilchen und Ionenfallen)
Q 50.6: Vortrag
Mittwoch, 21. März 2007, 17:45–18:00, 5D
Wiring up trapped ions — •Tony Lee1, Rob Clark2, and Hartmut Häffner1 — 1Institut für Quantenoptik und Quanteninformation, Innsbruck, Austria — 2Massachusetts Institute of Technology, Boston, USA
We are setting up an experiment to couple ions in different Paul traps with a wire. A trapped ion induces oscillating charges in the trap electrodes. By sending these charges over a wire to an electrode of another trap, the motional states of the ions in the two traps are coupled. The applications include scalable quantum computing, sympathetic cooling, and precision measurements.
We plan to trap Calcium–40 ions in a segemented surface trap with multiple trapping regions. To obtain a reasonable coupling strength (∼1 kHz), the capacitance of the coupling wire must be small. This means the wire must be electrically floating. In addition, the wire must be close (<50 microns) to the ions. Thus, we first seek to reliably position an ion close to a wire at floating potential and to study the wire’s influence on the trap potential and motional heating.