Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunable Fano resonances in the decay rates of a pointlike emitter near a
  graphene-coated nanowire   Based on the Lorenz-Mie theory, we derive analytical expressions of radiative
and nonradiative transition rates for different orientations of a point dipole
emitter in the vicinity of an infinitely long circular cylinder of arbitrary
radius. Special attention is devoted to the spontaneous decay rate of a dipole
emitter near a subwavelength-diameter nanowire coated with a graphene
monolayer. We show that plasmonic Fano resonances associated with light
scattering by graphene-coated nanowires appear in the Purcell factor as a
function of transition wavelength. Furthermore, the Fano line shape of
transition rates can be tailored and electrically tuned by varying the distance
between emitter and cylinder and by modulating the graphene chemical potential,
where the Fano asymmetry parameter is proportional to the square root of the
chemical potential. This gate-voltage-tunable Fano resonance leads to a
resonant enhancement and suppression of light emission in the far-infrared
range of frequencies. This result could be explored in applications involving
ultrahigh-contrast switching for spontaneous emission in specifically designed
tunable plasmonic nanostructures.

31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph