Ehrenfest Modeling of Cavity Vacuum Fluctuations and How to Achieve Emission from a Three-Level Atom
arXiv:2309.01912 · doi:10.1063/5.0175145
Abstract
A much-needed solution for the efficient modeling of strong coupling between matter and optical cavity modes is offered by mean-field mixed quantum--classical dynamics, where a classical cavity field interacts self-consistently with quantum states of matter through Ehrenfest's theorem. We previously introduced a modified mean-field approach, referred to as decoupled mean-field (DC-MF) dynamics, wherein vacuum fluctuations of the cavity field are decoupled from the quantum-mechanical ground state as a means to resolve an unphysical drawing of energy from the vacuum fluctuations by a two-level atom. Here, we generalize DC-MF dynamics for an arbitrary number of (nondegenerate) atomic levels, and show that it resolves an unphysical lack of emission from a three-level atom predicted by conventional mean-field dynamics. We furthermore show DC-MF to provide an improved description of reabsorption and (resonant) two-photon emission processes.
5 pages, 2 figures
References in corpus (7)
- Molecular polaritonics: Chemical Dynamics under strong Light-Matter Coupling
- Theoretical Challenges in Polaritonic Chemistry
- Tuning the coherent propagation of organic exciton-polaritons through dark state delocalization
- Capturing Vacuum Fluctuations and Photon Correlations in Cavity Quantum Electrodynamics with Multi-Trajectory Ehrenfest Dynamics
- Rovibrational Polaritons in Gas-Phase Methane
- Benchmarking Semiclassical and Perturbative Methods for Real-time Simulations of Cavity-Bound Emission and Interference
- A Mean-Field Treatment of Vacuum Fluctuations in Strong Light-Matter Coupling