  We present a theoretical study of the resonance fluorescence spectra of an
optically driven quantum dot placed near a single metal nanoparticle. The
metallic reservoir coupling is calculated for an 8-nm metal nanoparticle using
a time-convolutionless master equation approach where the exact photon
reservoir function is included using Green function theory. By exciting the
system coherently near the nanoparticle dipole mode, we show that the driven
Mollow spectrum becomes highly asymmetric due to internal coupling effects with
higher-order plasmons. We also highlight regimes of resonance squeezing and
broadening as well as spectral reshaping through light propagation. Our master
equation technique can be applied to any arbitrary material system, including
lossy inhomogeneous structures, where mode expansion techniques are known to
break down.

Mesoscale and Nanoscale Physics;Quantum Physics