Graphene Plasmonics and nano-photonics: capturing and controlling light at nanometer dimensions

2D and quantum materials for topological and quantum nanophotonics

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Recently, we revealed for the first time spatial images of graphene surface plasmons: surface waves coupled to the charge carrier excitations of the conducting sheet. Due to the unique characteristics of graphene, light can be squeezed into extremely small volumes and thus facilitate strongly enhanced light-matter interactions. In addition, the plasmon wavelength can be tuned and plasmon propagation can even be switched on and off in-situ, simply by tuning the carrier density by electrostatic gates. The capability of trapping light in very small volumes could give rise to a new methods of strong interactions between light and matter, potentially unveiling new states of matter.

We have access to a both room-temperature and low-temperature near-field imaging microscopes for infared and terahertz frequencies.

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