Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Electronic Devices Based on Metal-Dielectric Transition in
  Low-Dimensional Quantum Structures   Two types of optically manipulated quantum electronic devices are considered:
a quantum dot and a finite periodic molecular chain, with the period doubled
under resonance optical excitation. The stability of the working regimes of the
devices in large scale of temperatures is discussed. Some motivation in favor
of the molecular chain is suggested. A class of materials, which can be used
for producing this device is discussed.

15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th