Hannover 2016 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 14: Ultracold Atoms, Ions and Molecules III (with Q)

A 14.6: Vortrag

Dienstag, 1. März 2016, 12:15–12:30, f342

Dipolar photon- and excitation-transport in Rydberg-EIT media — •Daniel Viscor and Thomas Pohl — Max Planck Institut für Physik komplexer Systeme

We investigate the effects of excitation-exchange interactions on the propagation dynamics of quantum light through a strongly interacting Rydberg gas under conditions of electromagnetically induced transparency (EIT). Considering the most simple setting of a single Rydberg-polariton interacting with a stored collective Rydberg excitation, we show that long-range excitation-exchange between the two spin wave components gives rise to a photon propagation that differs fundamentally from the more common case of static van der Waals interactions. Using numerical simulations and analytical arguments, we characterise the resulting dissipative and dispersive optical response of the medium and discuss potential applications of the emerging new features.