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A: Fachverband Atomphysik
A 25: Ultracold Plasmas and Rydberg Systems (with Q)
A 25.5: Vortrag
Mittwoch, 8. März 2017, 15:45–16:00, P 104
Photon propagation through dissipative Rydberg medium at large input rates — •Ivan Mirgorodskiy1, Christoph Braun1,2, Florian Christaller1,2, Christoph Tresp1,2, Asaf Paris-Mandoki1, and Sebastian Hofferberth1,2 — 15. Phys. Inst. and Center for Integrated Quantum Science and Technology, Stuttgart University, Pfaffenwaldring 57, 70569 Stuttgart, Germany — 2Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense M, Denmark
In our experiment we study the propagation of photons through cold atomic ensemble of 87Rb. Coupling photons to a Rydberg state via Electromagnetically Induced Transparency (EIT) leads to excitation of hybrid atom-photon states called Rydberg polaritons. Rydberg polaritons propagate through the atomic medium with vastly reduced speed and therefore strong Rydberg-Rydberg interaction can be mapped onto the photons. Thereby dissipative Rydberg-EIT media reveal a rich physics, understanding of which is of a high necessity.
In this work we investigate the particular case of large input photon rates and study quantum many-body dynamics of a dissipative Rydberg-EIT medium. We discuss effects of polariton propagation resulting in the change of photon transmission through the medium and an effect of "Rydberg pollution" consisting in a drastically increased rate of production of stationary Rydberg excitations inside of the medium.