Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Controlling Kerr nonlinearity with electric fields in asymmetric double
  quantum-dots   The control of Kerr nonlinearity with electric fields in an asymmetric double
quantum-dot systems coupling with tunneling is investigated theoretically. It
is found that,by proper tuning of two light beams and tunneling via a bias
voltage, the Kerr nonlinearity can be enhanced and varied within a wide scale.

12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin