Preprint article · Journal article
Non-markovian model of photon-assisted dephasing by electron-phonon interactions in a coupled quantum-dot-cavity system
Quantum and Laser Photonics, Department of Photonics Engineering, Technical University of Denmark1
Department of Photonics Engineering, Technical University of Denmark2
Quantum Photonics, Department of Photonics Engineering, Technical University of Denmark3
Department of Micro- and Nanotechnology, Technical University of Denmark4
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.
Language: | English |
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Year: | 2010 |
Pages: | 157401 |
ISSN: | 10797114 and 00319007 |
Types: | Preprint article and Journal article |
DOI: | 10.1103/PhysRevLett.104.157401 |
ORCIDs: | Mørk, Jesper and Jauho, Antti-Pekka |