Plasmons in highly doped graphene are highly tuneable by external means (electrically, thermally, magnetically, nonlinearly) and exhibit record levels of confinement. Consequently, the interaction with optical quantum emitters is extraordinarily intense, rendering these excitations an excellent platform for the implementation of quantum optics phenomena at the nanometer scale. In particular, we predict that the strong-coupling regime is reached at the single plasmon level. In this presentation, we will discuss the physics and phenomenology of quantum optics phenomena enabled by graphene plasmons and review recent advances toward its implementation.
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