Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-09-22
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 4 figures, published in Physical Review Letters, changes according to referees comments, comments are welcome
Scientific paper
10.1103/PhysRevLett.104.157401
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 quasi-particle 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.
Jauho Antti-Pekka
Kaer P.
Lodahl Peter
Mork Jesper
Nielsen Torben Roland
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