Like all nanostructures, carbon nanotubes have interesting electromagnetic properties in the near field. The electromagnetic field near the cylindrical nanotube surface is affected by the electronic band structure, surface conductivity, and surface curvature of the nanotube. As a result, the interactions between the surface electromagnetic modes of the nanotube and, say, a surface excitonic state, or an atom (ion, molecule) doped into the nanotube have specific behaviors that have not been deeply explored thus far.
This talk reviews recent theoretical effort towards understanding the near-field optoelectronic properties of pristine and atomically doped carbon nanotubes. The research is motivated by the progress in the growth techniques of centimeter-long small-diameter single-walled nanotubes, measurements of the excitonic photoluminescence, the experiments on the encapsulation of single atoms into single-walled nanotubes, and finally by the need for the development of materials that may host quantum coherent states with long coherence lifetimes. A variety of electromagnetic phenomena, such as atomic spontaneous decay dynamics and atom-nanotube van der Waals coupling, light absorption and entanglement of atomic states close to carbon nanotubes, exciton-plasmon interactions on the nanotube surface, as well as their potential applications in cavity QED, nanophotonics and nanoplasmonics, will be discussed.
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