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Q: Fachverband Quantenoptik und Photonik
Q 28: Poster – Quantum Optics
Q 28.11: Poster
Tuesday, March 3, 2026, 17:00–19:00, Philo 2. OG
Interacting bosonic system — •Margherita Valenza1,2, Flore K. Kunst1,2, and Anton Montag1,2 — 1Max Planck Institute for the Science of Light, Staudtstraße 2, 91058 Erlangen, Germany — 2Department of Physics, Friedrich-Alexander Universitat Erlangen-Nurnberg, Staudtstraße 7, 91058 Erlangen, Germany
The collective behaviour of many-body systems is one of the main interests of contemporary quantum physics, particularly within the frameworks of nonlinear optics and Bose-Einstein condensate. In our case, we explore a tight binding model of coupled cavities array where there is the competition between coherent and incoherent effects. From the perspective of open quantum system, this interplay can create robust quantum resources and new phases of matter can arise as a consequence of the nontrivial behaviour of the steady state. As a consequence, the time-dependent simulations of the coherence matrix reveal a nontrivial effect in the regime of parameter that could be unstable in the absence of dissipation, but becomes stable due to cavity decay. These results highlight a nontrivial interplay between hopping, nonlinear drive and dissipation in engineered photonic systems.
Keywords: open quantum system; bosonic system; non linear optics; cavity QED