Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 42: Quantum gases: Disorder- or interaction-induced effects

Q 42.5: Vortrag

Donnerstag, 20. März 2014, 15:15–15:30, UDL HS2002

Dynamics and propagation of light in an interacting Rydberg-EIT medium — •Dario Jukić, Callum Murray, and Thomas Pohl — Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, 01187 Dresden

We study the nonlinear propagation of light in an interacting cold Rydberg gas under conditions of electromagnetically induced transparency (EIT). In the limit of low probe-beam intensities we derive an analytical expression for the nonlinear susceptibility that takes into account the nonlocal character of the optical response both in space and in time. This not only leads to effective photon interactions but also to nonlinearities in the photonic group velocity and masses. We illustrate these effects by analyzing the propagation dynamics of light pulses and discuss observable consequences.