Rostock 2019 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 7: Ultracold Plasmas and Rydberg Systems
Q 7.5: Talk
Monday, March 11, 2019, 11:30–11:45, S SR 211 Maschb.
Interactions and Scattering Dynamics among Rydberg Polaritons in multi-mode optical cavities — •Jan Kumlin1, Hadiseh Alaeian2, and Hans Peter Büchler1 — 1Institute for Theoretical Physics III and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany — 25th Institute of Physics and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany
Polaritons are quasi-particles resulting from the strong coupling of matter and photon states, whose dynamical properties stem from the photonic part and whose interaction properties originate from their matter part. While the small mass of the photons inside a cavity allows for observing quantum effects at higher temperatures, even up to the room temperature, the interaction allows for creating collective many-body effects. Due to their weak interactions, exciton-polaritons have been only studied in the weakly interacting mean field limit and the realization of a strongly correlated many-system has remained elusive so far. In this talk we discuss a new quasi-particle called cavity-Rydberg polariton, a quantum superposition of a Rydberg state and a cavity mode. Due to the strong interaction inherited by the Rydberg atoms, cavity-Rydberg polaritons are one of the best candidates to realize a strongly interacting system for studying quantum many-body physics with photons.