title: Non-markovian model of photon-assisted dephasing by electron-phonon interactions in a coupled quantum-dot-cavity system.
abstract: We investigate the influence of electron-phonon interactions on the dynamical properties of a quantum-dot-cavity QED system. We show that non-markovian effects in the phonon reservoir lead to strong changes in the dynamics, arising from photon-assisted dephasing processes, not present in markovian treatments. A pronounced consequence is the emergence of a phonon induced spectral asymmetry when detuning the cavity from the quantum-dot resonance. The asymmetry can only be explained when considering the polaritonic quasiparticle nature of the quantum-dot-cavity system. Furthermore, a temperature induced reduction of the light-matter coupling strength is found to be relevant in interpreting experimental data, especially in the strong coupling regime.
authors.affiliation: DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Building 345, 2800 Kgs. Lyngby, Denmark. per.kaer@gmail.com
authors.forename: P
authors.initials: P
authors.lastname: Kaer
authors.forename: T R
authors.initials: TR
authors.lastname: Nielsen
authors.forename: P
authors.initials: P
authors.lastname: Lodahl
authors.forename: A-P
authors.initials: AP
authors.lastname: Jauho
authors.forename: J
authors.initials: J
authors.lastname: Mørk