Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-diffracting states in one-dimensional Floquet photonic topological
  insulators   One dimensional laser-written modulated photonic lattices are known to be
particularly suitable for diffraction management purposes. Here, we address the
connection between discrete non-diffracting states and topological properties
in such devices through the experimental observation and identification of
three classes of non-diffracting state. The first one corresponds to
topologically protected edge states, recently predicted in Floquet topological
insulators, while the second and third are both bulk modes. One of them
testifies of a topological transition, although presenting topological features
different from those of the edge states, whether the other one result from
specific band structure engineering.

2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th