SAMOP 2023 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 65: Many-body Physics

Q 65.7: Talk

Friday, March 10, 2023, 12:30–12:45, F342

Nonlinear Response of Coherently Driven Atomic Arrays in the Discrete Truncated Wigner Approximation — •Christopher Mink and Michael Fleischhauer — University of Kaiserslautern-Landau

We derive a semiclassical approximation for the collective spontaneous and stimulated emission of an ensemble of driven two-level systems based on the discrete truncated Wigner approximation. In the case of totally symmetrical decay ("Dicke model") our method accurately reproduces exact results including width and height of the superradiant burst and population trapping even at small ensemble sizes.

We then study the dynamics of square subwavelength atomic arrays of 14x14 atoms and the non-isotropic emission of photons of initially fully inverted arrays. Furthermore the nonlinear transmissivity and reflectivity in the presence of a classical driving field at varying intensities is determined.