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[1], measurements of the excitonic photoluminescence[2], the
experiments on the encapsulation of single atoms into single-walled
nanotubes[3], and finally by the need for the development of materials
that may
host quantum coherent states with long coherence lifetimes[4]. A
variety of
electromagnetic phenomena, such as atomic spontaneous decay dynamics[5]
and
atom-nanotube van der Waals coupling[6], light absorption[7] and
entanglement
of atomic states[8] close to carbon nanotubes, exciton-plasmon
interactions on
the nanotube surface[9], as well as their potential applications in
cavity QED,
nanophotonics and nanoplasmonics, will be discussed.
REFERENCES:
[1]
L.Zheng et al., Nature Materials 3, 673 (2004).
[2]
M.S.Dresselhaus et al., Annu. Rev. Phys. Chem. 58, 719 (2007).
[3]
G.-H.Jeong et al, Phys. Rev. B 68,075410 (2003).
[4]
T.Brandes, Phys. Rep. 408, 315 (2005).
[5]
I.V.Bondarev and Ph.Lambin, Phys. Rev. B 70, 035407 (2004).
[6]
I.V.Bondarev and Ph.Lambin, Phys. Rev. B 72, 035451 (2005).
[7]
I.V.Bondarev and B.Vlahovic, Phys. Rev. B 74, 073401 (2006).
[8]
I.V.Bondarev and B.Vlahovic, Phys. Rev. B 75, 033402 (2007).