Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological control of the nonlinear-optical response of hybrid quantum
  systems   We map the topological properties of a one dimensional superlattice to the
optical properties of an electronic system. We find that the nonlinear-optical
response is optimized for electrons that live in the transitional morphology
between topologically protected edge states and delocalized eigenstates. This
provides a novel means of tuning the nonlinear-optical response of hybrid
quantum systems. We show how these characteristics can be used to mimic
saturable absorption and illustrate how `quantum cords' can be used to build an
efficient all-optical switch.

6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat