Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterization of a multimode coplanar waveguide parametric amplifier   We characterize a novel Josephson parametric amplifier based on a
flux-tunable quarter-wavelength resonator. The fundamental resonance frequency
is ~1GHz, but we use higher modes of the resonator for our measurements. An
on-chip tuning line allows for magnetic flux pumping of the amplifier. We
investigate and compare degenerate parametric amplification, involving a single
mode, and nondegenerate parametric amplification, using a pair of modes. We
show that we reach quantum-limited noise performance in both cases, and we show
that the added noise can be less than 0.5 added photons in the case of low
gain.

29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
10
The categories of this paper are: q-bio