Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Graphene microbolometers with superconducting contacts for terahertz
  photon detection   We report on noise and thermal conductance measurements taken in order to
determine an upper bound on the performance of graphene as a terahertz photon
detector. The main mechanism for sensitive terahertz detection in graphene is
bolometric heating of the electron system. To study the properties of a device
using this mechanism to detect terahertz photons, we perform Johnson noise
thermometry measurements on graphene samples. These measurements probe the
electron-phonon behavior of graphene on silicon dioxide at low temperatures.
Because the electron-phonon coupling is weak in graphene, superconducting
contacts with large gap are used to confine the hot electrons and prevent their
out-diffusion. We use niobium nitride leads with a $T_\mathrm{c}\approx 10$ K
to contact the graphene. We find these leads make good ohmic contact with very
low contact resistance. Our measurements find an electron-phonon thermal
conductance that depends quadratically on temperature above 4 K and is
compatible with single terahertz photon detection.

30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph