Nested Open Quantum Systems Approach to Photonic Bose$-$Einstein Condensation

• URL: http://arxiv.org/abs/2203.11039v1
• Date: Mon, 21 Mar 2022 15:03:08 GMT
• Title: Nested Open Quantum Systems Approach to Photonic Bose$-$Einstein Condensation
• Authors: Andris Erglis, Stefan Yoshi Buhmann
• Abstract summary: The photonic Bose$-$Einstein condensate is a recently observed collective ground state of a coupled light-matter system. We derive a master equation using a nested open quantum systems approach to model the coupled photon$-$dye dynamics.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The photonic Bose$-$Einstein condensate is a recently observed collective ground state of a coupled light-matter system. We describe this quantum state based on macroscopic quantum electrodynamics in dispersing and absorbing environments. To model the coupled photon$-$dye dynamics, we derive a master equation using a nested open quantum systems approach yielding all parameters essential to describe the condensation process. This approach allows us to describe photon condensates of arbitrary shapes because all geometry-dependent decay constants can be expressed in terms of the Green's tensor. In particular, we obtain the cavity mode absorption and emission rates of the dye molecules.

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