DPG Phi
Verhandlungen
Verhandlungen
DPG

Hannover 2010 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 55: Poster II

Q 55.55: Poster

Donnerstag, 11. März 2010, 16:00–19:00, Lichthof

Quantum Information Processing with Atoms in Arrays of Dipole Potentials — •Malte Schlosser, Jens Kruse, Peter Schauß, Benedikt Baumgarten, Sascha Tichelmann, and Gerhard Birkl — Institut für Angewandte Physik, Technische Universität Darmstadt, Schlossgartenstraße 7, 64289 Darmstadt

Ultracold neutral atoms confined in two dimensional periodic potentials represent highly controllable quantum information systems with long coherence times. In our experiment, we use sets of optical micro-potentials created by micro-fabricated lens arrays as the architecture for a scalable quantum processor. The microtrap array accesses the regime of collisional blockade, which allows us to probe single atoms in a site-selective fashion using advanced detection schemes with high efficiency and reliability. In addition to the stable and reproducible operation of the dipole trap array, employing microoptics ensures single site addressability. We are able to control each potential well separately utilizing a spatial light modulator. The combined system allows for the creation of arbitrary trap configurations as well as for flexible, site-specific, but also parallelized initialization and coherent manipulation of separated small ensembles or single 85Rb atoms. We report on the experimental cancellation of the differential ac Stark shift of the hyperfine clock transition by optical means. The separation of internal and external dynamics results in a strong suppression of the dephasing of atoms occupying different vibrational levels and trapping sites, respectively. This scheme is extendable to all alkali elements where no standard "magic-wavelength" is available.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2010 > Hannover