Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coherent control of optical spin-to-orbital angular momentum conversion
  in metasurface   We propose and experimentally demonstrate that a metasurface consisting of
Pancharatnam-Berry phase optical elements can enable the full control of
optical spin-to-orbital angular momentum conversion. Our approach relies on the
critical interference between the transmission and reflection upon the
metasurfaceto create actively tunable and controllable conversion with a high
output via coherent control of the two incident beams. The introduced control
methodology is general and could be an important step toward the development of
functional optical devices for practical applications.

20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga