Light–matter coupling strength and optical loss are two key physical quantities in cavity quantum electrodynamics (CQED), and their interplay determines whether light–matter hybrid states can be formed or not in chemical systems. In this study, by using macroscopic quantum electrodynamics (MQED) combined with a pseudomode approach, we present a simple but accurate method, which allows us to quickly estimate the light–matter coupling strength and optical loss without free parameters. Moreover, for a molecular emitter coupled with photonic modes (including cavity modes and plasmon polariton modes), we analytically and numerically prove that the dynamics derived from the MQED-based wavefunction approach is mathematically equivalent to the dynamics governed by the CQED-based Lindblad master equation when the Purcell factor behaves like Lorentzian functions.
Simple but accurate estimation of light–matter coupling strength and optical loss for a molecular emitter coupled with photonic modes
Note: This paper is part of the JCP Special Topic on Advances in Modeling Plasmonic Systems.
Siwei Wang, Yi-Ting Chuang, Liang-Yan Hsu; Simple but accurate estimation of light–matter coupling strength and optical loss for a molecular emitter coupled with photonic modes. J. Chem. Phys. 7 October 2021; 155 (13): 134117. https://doi.org/10.1063/5.0060171
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