Hannover 2013 – wissenschaftliches Programm

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

Q: Fachverband Quantenoptik und Photonik

Q 53: Quantum information: Atoms and ions IV

Q 53.6: Vortrag

Donnerstag, 21. März 2013, 15:30–15:45, A 310

Multi-site single-atom qubit manipulation in a 2D quantum register — •Sascha Tichelmann, Malte Schlosser, Moritz Hambach, and Gerhard Birkl — Institut für Angewandte Physik, Technische Universität Darmstadt, Schlossgartenstraße 7, 64289 Darmstadt, Germany

The ability to synchronously probe multi-component quantum systems in multi-site architectures is fostering some of the most active research in the investigation of ultra-cold atomic quantum systems for quantum information processing (QIP). For this purpose, we have introduced the application of micro-fabricated optical elements for atom optics and QIP with atoms. We present recent progress towards the realization of a scalable architecture for QIP using neutral atoms in two-dimensional (2D) arrays of optical microtraps as qubit registers. This approach is simultaneously targeting the important issues of single-site addressability and scalability, and provides versatile configurations for quantum state storage, manipulation, and retrieval. We report on the implementation of a quantum register with well over 100 sites featuring trap sizes and a tuneable site separation in the single micrometer regime. Individual ⁸⁵Rb atoms serve as carriers for quantum information. The atom number at each site can be initialized to 1 with sup-poissonian statistics by applying an atom number filtering process based on light assisted collisions. In each experimental realization, we prepare exactly one atom in more than 50 sites. We present single-site resolved addressing of single spins in a reconfigurable fashion and discuss the feasibility of Rydberg based two-qubit gates in our setup.