Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Narrowing the filter cavity bandwidth via optomechanical interaction   We propose using optomechanical interaction to narrow the bandwidth of filter
cavities for achieving frequency-dependent squeezing in advanced
gravitational-wave detectors, inspired by the idea of optomechanically induced
transparency. This not only allows us to achieve narrow bandwidth, comparable
to the detection band of few hundred Hz, with tabletop optical cavities, but
also to tune the bandwidth over a wide range, which is ideal for optimizing
sensitivity for different gravitational-wave sources. The experimental
challenge for its implementation is the stringent requirement on low thermal
noise, which would need superb mechanical quality factor that is quite
difficult to achieve by using currently-available low-loss mechanical
oscillators; one possible solution is to use optical dilution of the mechanical
damping, which can considerably relax the requirement on the mechanics.

1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math