SAMOP 2021 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 17: Quantum Effects
Q 17.2: Poster
Donnerstag, 23. September 2021, 16:30–18:30, P
Open Quantum Systems Approach to Photonic Bose-Einstein Condensation — •Andris Erglis1 and Stefan Yoshi Buhmann2 — 1University of Freiburg, Germany — 2University of Kassel, Germany
The photonic Bose-Einstein condensate is a recently observed collective ground state of a coupled light-matter system. We describe this novel quantum state on the basis of macroscopic quantum electrodynamics in dispersing and absorbing environments. To describe the coupled photon-dye dynamics dynamics, we derive a master equation using Nested Open Quantum Systems approach with all the necessary parameters to describe the condensation process. This approach allows us to describe the photon condensate in arbitrary geometries because all the decay constants can be expressed in terms of Green's tensor.
In the first step we derive constants responsible for spontaneous and cavity decay and laser pumping by tracing out the respective photon field baths. In the second step we trace out the rovibrational modes of the molecules as an effective bath which are influenced by dissipation constants derived in the first step. From that we derive the cavity mode absorption and emission rates of the dye molecules.