TY - JOUR
T1 - Non-markovian model of photon-assisted dephasing by electron-phonon interactions in a coupled quantum-dot-cavity system
AU - Kaer, P.
AU - Nielsen, T. R.
AU - Lodahl, P.
AU - Jauho, A. P.
AU - Mørk, J.
PY - 2010/4/13
Y1 - 2010/4/13
N2 - 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.
AB - 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.
KW - Cavity QED
KW - Non-Markovian dephasing
KW - Photon-assisted processes
KW - Cavity QED
KW - Non-Markovian dephasing
KW - Photon-assisted processes
KW - Cavity QED
KW - Non-Markovian dephasing
KW - Photon-assisted processes
UR - http://www.scopus.com/inward/record.url?scp=77950819845&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.104.157401
DO - 10.1103/PhysRevLett.104.157401
M3 - Article
VL - 104
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 15
M1 - 157401
ER -