Rostock 2019 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 8: Ultra-cold atoms, ions and BEC (joint session A/Q)

A 8.3: Vortrag

Montag, 11. März 2019, 16:45–17:00, S HS 1 Physik

Rydberg spectroscopy in an atom-ion hybrid trap — •Shinsuke Haze¹, Joschka Wolf¹, Markus Deiß¹, Limei Wang¹, Georg Raithel², Christian Fey³, Frederic Hummel³, Florian Meinert⁴, Peter Schmelcher³, and Johannes Hecker Denschlag¹ — ¹Institut für Quantenmaterie, Universität Ulm, 89069 Ulm, Germany — ²Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA — ³Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — ⁴Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

Hybrid atom-ion trap has been a key technology for intriguing applications such as cold chemistry, molecular physics and so on. The good controllability of ion's and atomic states provides an opportunity for studying atom-ion interaction in an unprecedented regime. Here, we demonstrate Rydberg spectroscopy of rubidium atoms within an atom-ion hybrid trap, where an optical dipole trap and a Paul trap are combined for simultaneous trapping of neutral and charged particles. This versatility enables for capturing an ionized product following an optical excitation to Rydberg states. The trapped ions elastically collide with the rubidium atoms leading to an atom loss, which gives rise to a high sensitivity of observing the underlying Rydberg excitation. In this presentation, we show results for spectroscopy of Rydberg states, where we measured avoided level crossings. We will discuss our data by comparing with the calculated Stark map of Rydberg states.