%0 Thesis
%A Sukharnikov, Vladislav
%T Numerically Efficient Theoretical Frameworks for Collective Spontaneous Emission
%I University of Hamburg
%V Dissertation
%M PUBDB-2026-00121
%D 2025
%Z Dissertation, University of Hamburg, 2025
%X Cooperative spontaneous emission, or superradiance, occurs when a group of excited atoms emit light coherently in an intense burst due to synchronized dipole moments. This phenomenon is significant for applications in spectroscopy, metrology, and high-brightness light sources. Modeling such collective emission is challenging for large atomic systems, prompting the development of efficient numerical frameworks. This dissertation introduces a second-quantized formalism in Liouville space and a stochastic approach based on the positive P-representation. These methods are applied to study compact systems of multi-level emitters under incoherent pumping and decoherence. Numerical results benchmark the two approaches and highlight their utility and limitations for simulating many-body quantum effects.
%F PUB:(DE-HGF)11
%9 Dissertation / PhD Thesis
%U https://bib-pubdb1.desy.de/record/643315