The development of active and passive plasmonic devices is challenging due to the high level of dissipation in normal metals. One possible solution to this problem is using alternative materials. Graphene is a good candidate for plasmonics in the near-infrared region. In this paper, we develop a quantum theory of a graphene plasmon generator. Lozovic et al. account for quantum correlations and dissipation effects, thus they are able to describe such regimes of a quantum plasmonic amplifier as a surface plasmon emitting diode and a surface plasmon amplifier using stimulated radiation emission. Switching between these generation types is possible in situ with a variance of the graphene Fermi level. They provide explicit expressions for dissipation and interaction constants through material parameters, and they identify the generation spectrum and the second-order correlation function, which predicts the laser statistics.
New source: http://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.035406