Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Full-color complex-amplitude vectorial holograms based on multi-freedom
  metasurfaces   Phase, polarization, amplitude and frequency represent the basic dimensions
of light, playing crucial roles for both fundamental light-mater interactions
and all major optical applications. Metasurface emerges as a compact platform
to manipulate these knobs, but previous metasurfaces have limited flexibility
to simultaneous control them. Here, we introduce a multi-freedom metasurface
that can simultaneously and independently modulate phase, polarization and
amplitude in an analytical form, and further realize frequency multiplexing by
a k-space engineering technique. The multi-freedom metasurface seamlessly
combine geometric Pancharatnam-Berry phase and detour phase, both of which are
frequency-independent. As a result, it allows complex-amplitude vectorial
hologram at various frequencies based on the same design strategy, without
sophisticated nanostructure searching of massive size parameters. Based on this
principle, we experimentally demonstrate full-color complex-amplitude vectorial
meta-holograms in the visible with a metal-insulator metal architecture,
unlocking the long-sought full potential of advanced light field manipulation
through ultrathin metasurfaces.

11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci