Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 51: Poster: Quantum Optics and Photonics IV
Q 51.3: Poster
Mittwoch, 7. März 2018, 16:15–18:15, Redoutensaal
A quantum gas machine for local photoionization of ultracold 87Rb on ultrafast time-scales — •Jakob Butlewski1, Tobias Kroker1,2, Bernhard Ruff1,2, Juliette Simonet1,2, Philipp Wessels1,2, Markus Drescher1,2, and Klaus Sengstock1,2 — 1Zentrum für Optische Quantentechnologien (ZOQ), Luruper Chaussee 149, 22761 Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging (CUI), Luruper Chaussee 149, 22761 Hamburg, Germany
Combining ultracold atoms with ultrashort laser pulses offers novel experimental possibilities such as the creation of hybrid quantum systems by local ionization of atoms in strong laser fields or the investigation of quantum Zeno physics with pulsed dissipation.
Here, we report on our progress in setting up an experiment for local photoionization in quantum gases and the detection of thereby created charged particles. The ultracold atomic sample is prepared in a combined magnetic quadrupole and optical dipole trap and is transported into the focal region of the ionizing femtosecond laser beam using optical tweezers. Subsequently, the emerging photoelectrons shall be detected with spatial resolution while counting the ions in coincidence. In order to obtain unperturbed trajectories of the charged particles electrical stray fields are shielded and an active magnetic field compensation has been set up.