TY - JOUR
T1 - Monte Carlo model for the photoluminescence kinetics of a quantum dot embedded in a nanocavity
AU - Tarel, G.
AU - Savona, V.
AU - Badolato, A.
AU - Winger, M.
AU - Volz, T.
AU - Imamoglu, A.
PY - 2009
Y1 - 2009
N2 - We address the problem of the photoluminescence of a quantum (QD) dot in a nanocavity, with focus on the case of nonzero detuning. In this regime, experiments have shown that strong emission from the cavity-like peak is still present for dot-cavity detuning exceeding 10 meV, which seems puzzling. We will discuss the general theory of cavity feeding, due to the relaxation and recombination kinetics of a multiply excited QD. We first compute the multi-exciton manifolds using a configuration-interaction scheme, starting from a truncated single-particle basis. We then run Monte-Carlo paths of excitation-emission kinetics on these states. This allows to extract photoluminescence spectra and two-photon correlation curves. The agreement with experimental data[1, 2] is very good. Our result shows unambiguously that the cavity feeding mechanism at large detunings can be attributed to excited-state multiexciton radiative decay (mostly biexcitons), also involving states in the wetting layer continuum.
AB - We address the problem of the photoluminescence of a quantum (QD) dot in a nanocavity, with focus on the case of nonzero detuning. In this regime, experiments have shown that strong emission from the cavity-like peak is still present for dot-cavity detuning exceeding 10 meV, which seems puzzling. We will discuss the general theory of cavity feeding, due to the relaxation and recombination kinetics of a multiply excited QD. We first compute the multi-exciton manifolds using a configuration-interaction scheme, starting from a truncated single-particle basis. We then run Monte-Carlo paths of excitation-emission kinetics on these states. This allows to extract photoluminescence spectra and two-photon correlation curves. The agreement with experimental data[1, 2] is very good. Our result shows unambiguously that the cavity feeding mechanism at large detunings can be attributed to excited-state multiexciton radiative decay (mostly biexcitons), also involving states in the wetting layer continuum.
UR - http://www.scopus.com/inward/record.url?scp=74549201563&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/193/1/012124
DO - 10.1088/1742-6596/193/1/012124
M3 - Article
AN - SCOPUS:74549201563
SN - 1742-6588
VL - 193
SP - 1
EP - 4
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
M1 - 012124
ER -