Hannover 2013 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 35: Poster I

Q 35.36: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Hyperfine Qubit in a Microstructured Ion Trap with Integrated Solenoids — •Timm F. Gloger, M. Tanveer Baig, Thomas Collath, Delia Kaufmann, Peter Kaufmann, Michael Johanning, and Christof Wunderlich — Universität Siegen, NT Fakultät, Department Physik, 57068 Siegen, Germany

We characterize a micro-structured segmented ion trap with integrated solenoids. Using the segmented DC electrode structure of the trap we shuttle and split strings of laser cooled ions along the trap axis and are able to design various trapping potentials.

The trap is operated with ions of two Ytterbium isotopes, ¹⁷²Yb⁺ and ¹⁷¹Yb⁺. We coherently manipulate a qubit implemented in the |S_1/2, F=0> ↔ |S_1/2, F=1> hyperfine transistions of ¹⁷¹Yb⁺ and use the qubit as a sensor to characterized the magnetic field along the trap axis.

The solenoids are used to create switchable magnetic field gradients that in turn allow for addressing trapped ions in frequency space and coupling the ions’ motional and spin states. Furthermore, long range spin-spin coupling of the ions’ internal states is induced by the gradient. These mechanisms are called Magnetic Gradient Induced Coupling, MAGIC.

Switchable gradients and the ability to shape the trapping potentials enable the custom design of spin-spin coupling constants useful for a variety of experiments in quantum information science.