Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical unidirectional amplification in a three-mode optomechanical
  system   We study the directional amplification of an optical probe field in a
three-mode optomechanical system, where the mechanical resonator interacts with
two linearly-coupled optical cavities and the cavities are driven by strong
optical pump fields. The optical probe field is injected into one of the cavity
modes, and at the same time, the mechanical resonator is subject to a
mechanical drive with the driving frequency equal to the frequency difference
between the optical probe and pump fields. We show that the transmission of the
probe field can be amplified in one direction and de-amplified in the opposite
direction. This directional amplification or de-amplification results from the
constructive or destruction interference between different transmission paths
in this three-mode optomechanical system.

15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin