Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-03-15
Physical Review B 81, 241302(R) (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1103/PhysRevB.81.241302
We experimentally investigate the non-resonant feeding of photons into the optical mode of a zero dimensional nanocavity by quantum dot multiexciton transitions. Power dependent photoluminescence measurements reveal a super-linear power dependence of the mode emission, indicating that the emission stems from multiexcitons. By monitoring the temporal evolution of the photoluminescence spectrum, we observe a clear anticorrelation of the mode and single exciton emission; the mode emission quenches as the population in the system reduces towards the single exciton level whilst the intensity of the mode emission tracks the multi-exciton transitions. Our results lend strong support to a recently proposed mechanism mediating the strongly non-resonant feeding of photons into the cavity mode.
Bichler Martin
Finley Jonathan J.
Hauke Norman
Kaniber Michael
Laucht Arne
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