Bonn 2025 – wissenschaftliches Programm

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

Q: Fachverband Quantenoptik und Photonik

Q 25: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)

Q 25.50: Poster

Dienstag, 11. März 2025, 14:00–16:00, Tent

Towards trapping of single atoms in a micro-fabricated optical tweezer — •Marian Rockenhäuser¹, Lukas Blessing², and Tim Langen¹ — ¹TU Wien, Atominstitut, Cold Molecules and Quantum Technologies — ²Universität Stuttgart, 5. Physikalisches Institut

The trapping of single ultracold atoms is a crucial technique for applications in quantum computation, communication, and sensing. However, one of the main disadvantages of most experiments is their considerable large size and complexity. Here we present our progress towards the miniaturization of a classic single atom experiment. This is achieved by the use of a sophisticated compact laser system and the integration of a 3D-printed optical tweezer with a rubidium magneto-optical trap. The tweezer is created using micrometer-scale lenses fabricated directly onto the tip of a standard optical fiber. These unique properties enable the efficient trapping of single atoms and the collection of their fluorescence using the same fiber. Its unique properties will make it possible to both trap single atoms and the subsequent collection of their fluorescence with high efficacy. Based on this, a single-photon source can be realized which will have extensive applications in the field of quantum information processing.

Keywords: rubidium; magneto optical trap; single atoms; 3D-printed; fiber lenses