It is known that the more tractable Markovian models of coupling suited for weak interactions may overestimate the Rabi frequency notably when applied to the strong-coupling regime. Here, a more significant consequence of the non-Markovian interaction between a photon emitter and dissipating matter such as resonant plasmonic nanoparticles is described. A large increase of radiative decay and a diminished non-radiative loss is shown, which unravels the origin of unexpected large enhancements of surface-enhanced-Raman-spectroscopy (SERS), as well as the anomalous enhancements of emission due to extremely small fully absorbing metal nanoparticles less than 10 nm in dimensions. We construct the mixture of pure states of the coupled emitter-nanoparticle system, unlike conventional methods that rely on the orthogonal modes of the nanoparticle alone.
Constructing mode-resolved quantum optical models for emitters in photonic crystals
Donostia International Physics Center（多诺西亚国际物理中心）；University of the Basque Country (UPV/EHU)（巴斯克大学）；Institute of Fundamental Physics IFF-CSIC（CSIC基础物理研究所）；Department of Physics, Columbia University（哥伦比亚大学物理系）；Institute for Theoretical Physics, ETH Zurich（苏黎世联邦理工学院理论物理研究所）；Département de Physique et Institut Quantique, Université de Sherbrooke（舍布鲁克大学物理与量子研究所）；Quantum Advanced Research Center (QuARC), CSIC（CSIC量子先进研究中心）；Institute of Fundamental Physics (IFF), CSIC（CSIC基础物理研究所）
