Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical vortices in nanophotonics   In the last two decades, optical vortices carried by twisted light wavefronts
have attracted a great deal of interest, providing not only new physical
insights into light-matter interactions, but also a transformative platform for
boosting optical information capacity. Meanwhile, advances in nanoscience and
nanotechnology lead to the emerging field of nanophotonics, offering an
unprecedented level of light manipulation via nanostructured materials and
devices. Many exciting ideas and concepts come up when optical vortices meet
nanophotonic devices. Here, we provide a mini review on recent achievements
made in nanophotonics for the generation and detection of optical vortices and
some of their applications.

28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
19
The categories of this paper are: eess
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol