Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 4: Ultracold Plasmas and Rydberg Systems I (joint session Q/A)
A 4.6: Vortrag
Montag, 5. März 2018, 12:00–12:15, K 2.013
Emergent universal dynamics for an atomic cloud coupled to an optical waveguide — •Jan Kumlin1, Sebastian Hofferberth2, and Hans Peter Büchler1 — 1Institut für Theoretische Physik III and Center for Integrated Quantum Science and Technology, Universität Stuttgart, 70569 Stuttgart, Germany — 2Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230 Odense, Denmark
Motivated by recent experiments on strong coupling of a cloud of Rydberg atoms coupled to a propagating light field [1], we study the effect of interaction-induced dephasing in an atomic cloud of atoms coupled to an optical one-dimensional waveguide. The system's dynamics can then be described by dissipative terms characterising the collective emission of photons and coherent interaction due to the virtual exchange of photons. We show that the coherent exchange interaction gives rise to universal dynamics with coherent oscillations and dephasing on a time scale that grows with the number of atoms in the cloud. Further, we discuss a possible experimental setup to decouple coherent and dissipative dynamics in order to observe the universal dynamics.
[1] A. Paris-Mandoki, C. Braun, J. Kumlin, C. Tresp, I. Mirgorodskiy, F. Christaller, H. P. Büchler, and S. Hofferberth, Phys. Rev. X 7, 41010 (2017)