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Q: Fachverband Quantenoptik und Photonik

Q 53: SYCM: Contributed posters for the Symposium Hot topics in cold molecules: From laser cooling to quantum resonances

Q 53.6: Poster

Donnerstag, 12. März 2020, 16:30–18:30, Empore Lichthof

A new experimental setup to investigate cold molecule-Rydberg atom interactions — •Shreyas Gulhane and Martin Zeppenfeld — Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany

Due to their large electric dipole moments, interactions between polar molecules and Rydberg atoms extend over large distances, allowing for applications in quantum science. In the past, we have investigated such interactions at room temperature, allowing the observation and investigation of Förster resonant energy transfer between these two systems [1].

Extending this work to cold molecules and cold Rydberg atoms provides new opportunities. In this contribution, we present the experimental setup. Slow molecules produced by velocity filtering via a quadrupole electric guide interact with Rydberg atoms excited from cold atoms inside a magneto-optical trap (MOT). We present the laser system for the MOT, a 780nm tappered amplifier diode laser locked to a rubidium vapor cell. This is combined with a 480nm frequency doubled diode laser for two-photon excitation of rubidium Rydberg states. In addition, we present our vacuum setup. This includes in-vacuum MOT coils and a carefully designed electrode arrangement for precise electric field control. [1]. F. Jarisch et al., New J. Phys. 20, 113044 (2018).