An experimental pathway towards an exact theory of strong coupling
arXiv:2607.15089
The paper presents an exact description of a two‑level system strongly coupled to its environment using an alternative form of the GKLS master equation, and proposes a solid‑state quantum‑dot experiment to determine the key strong‑coupling parameters.
Abstract
We employ a mathematically equivalent form of the GKLS master equation to arrive at an exact theoretical description of a two-level system strongly coupled to the environment. The framework, while intuitive, shedding light on the physics of the problem, and agreeing with existing results, such as thermalisation to a non-canonical state, is based around three parameters that are unknown outside of the weak coupling regime -- the analogue to the detailed balance relation, and two coupling strength constants. As a way forward, we propose a feasible experimental protocol based on a solid-state electronic quantum dot device, through which the fundamental parameters of the problem can be revealed, which would further the fundamental understanding of strong coupling.
5 pages, 2 figures