Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strong environmental coupling in a Josephson parametric amplifier   We present a lumped-element Josephson parametric amplifier designed to
operate with strong coupling to the environment. In this regime, we observe
broadband frequency dependent amplification with multi-peaked gain profiles. We
account for this behaviour using the "pumpistor" model which allows for
frequency dependent variation of the external impedance. Using this
understanding, we demonstrate control over gain profiles through changes in the
environment impedance at a given frequency. With strong coupling to a suitable
external impedance we observe a significant increase in dynamic range, and
large amplification bandwidth up to 700 MHz giving near quantum-limited
performance.

15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys