Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detection of weak microwave fields with an underdamped Josephson
  junction   We have constructed a microwave detector based on the voltage switching of an
underdamped Josephson junction, that is positioned at a current antinode of a
{\lambda}/4 coplanar waveguide resonator. By measuring the switching current
and the transmission through a waveguide capacitively coupled to the resonator
at different drive frequencies and temperatures we are able to fully
characterize the system and assess its detection efficiency and sensitivity.
Testing the detector by applying a classical microwave field with the strength
of a single photon yielded a sensitivity parameter of 0.5 in qualitative
agreement with theoretical calculations.

36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
18
The categories of this paper are: econ
19
The categories of this paper are: eess
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int