Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 39: Poster: Quantum Optics and Photonics II

Q 39.4: Poster

Tuesday, March 6, 2018, 16:15–18:15, Zelt Ost

Controlled optical transport of cold atoms into a hollow-core fiber — •Ronja Wirtz, Maria Langbecker, Mohammad Noaman, Wei Li, Parvez Islam, and Patrick Windpassinger — Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany

Cold atoms inside hollow-core fibers are a promising candidate for a well defined atom-light interface. To obtain high control over the system, the characterization of the interactions between atoms and the fiber wall is required. Here, one essential part is an efficient and well controlled transport of the atoms inside the fiber. By this, both spatial and temporal distribution of the atoms can be manipulated.

In our experimental setup, laser cooled Rubidium atoms are transported into a hollow-core fiber using an optical conveyor belt. This poster explains the details of optimizing our transport procedure both for moving the atoms outside and inside the fiber. We are applying different types of acceleration ramps to vary the transport process. Additionally power ramps of the trapping beams are implemented to reduce heating of the atoms caused by the two counterpropagating dipole trap beams. This technique is an important ingredient to investigate properties of Rydberg atoms inside hollow-core fibers [1].

[1] M. Langbecker, M. Noaman, N. Kjaergaard, F. Benabid, and P. Windpassinger, Phys. Rev A 96, 041402(R) (2017).