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| PL spectra in a weak coupling regime (mode attraction). |
PL color map in a strong coupling regime (disappearance of Rabi splitting with anti-crossing dispersion). |
Cavity Quantum Electrodynamics Using Single Quantum Dot
We fabricate a photonic crystal nanocavity with a single quantum dot (QD),
and investigate the interaction between a single exciton (X) and the cavity
mode (C), namely the effect of cavity quantum electrodynamics (cQED). In
a weak X-C coupling regime, we observe an unusual mode attraction between
X and C. Moreover, we find that Rabi splitting disappears while anti-crossing
dispersion is maintained in a strong coupling regime. These are novel cQED
effects that arise from the large exciton dephasing of the solid-state
two-level system. (Page 39)