Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Plasmonics   Quantum plasmonics is a rapidly growing field of research that involves the
study of the quantum properties of light and its interaction with matter at the
nanoscale. Here, surface plasmons - electromagnetic excitations coupled to
electron charge density waves on metal-dielectric interfaces or localized on
metallic nanostructures - enable the confinement of light to scales far below
that of conventional optics. In this article we review recent progress in the
experimental and theoretical investigation of the quantum properties of surface
plasmons, their role in controlling light-matter interactions at the quantum
level and potential applications. Quantum plasmonics opens up a new frontier in
the study of the fundamental physics of surface plasmons and the realization of
quantum-controlled devices, including single-photon sources, transistors and
ultra-compact circuitry at the nanoscale.

12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math