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@ARTICLE{Valenti:863055,
      author       = {Valenti, Francesco and Henriques, Fabio and Catelani,
                      Gianluigi and Maleeva, Nataliya and Grünhaupt, Lukas and
                      von Lüpke, Uwe and Skacel, Sebastian T. and Winkel, Patrick
                      and Bilmes, Alexander and Ustinov, Alexey V. and Goupy,
                      Johannes and Calvo, Martino and Benoît, Alain and
                      Levy-Bertrand, Florence and Monfardini, Alessandro and Pop,
                      Ioan M.},
      title        = {{I}nterplay {B}etween {K}inetic {I}nductance,
                      {N}onlinearity, and {Q}uasiparticle {D}ynamics in {G}ranular
                      {A}luminum {M}icrowave {K}inetic {I}nductance {D}etectors},
      journal      = {Physical review applied},
      volume       = {11},
      number       = {5},
      issn         = {2331-7019},
      address      = {College Park, Md. [u.a.]},
      publisher    = {American Physical Society},
      reportid     = {FZJ-2019-03177},
      pages        = {054087},
      year         = {2019},
      abstract     = {Microwave kinetic inductance detectors (MKIDs) are
                      thin-film, cryogenic, superconducting resonators. Incident
                      Cooper pair-breaking radiation increases their kinetic
                      inductance, thereby measurably lowering their resonant
                      frequency. For a given resonant frequency, the highest MKID
                      responsivity is obtained by maximizing the kinetic
                      inductance fraction α. However, in circuits with α close
                      to unity, the low supercurrent density reduces the maximum
                      number of readout photons before bifurcation due to
                      self-Kerr nonlinearity, therefore setting a bound for the
                      maximum α before the noise-equivalent power (NEP) starts to
                      increase. By fabricating granular aluminum MKIDs with
                      different resistivities, we effectively sweep their kinetic
                      inductance from tens to several hundreds of pH per square.
                      We find a NEP minimum in the range of 30aW/√Hz at
                      α≈0.9, which results from a trade-off between the onset
                      of nonlinearity and a nonmonotonic dependence of the noise
                      spectral density versus resistivity.},
      cin          = {PGI-2 / PGI-11},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-2-20110106 / I:(DE-Juel1)PGI-11-20170113},
      pnm          = {144 - Controlling Collective States (POF3-144)},
      pid          = {G:(DE-HGF)POF3-144},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000470891900002},
      doi          = {10.1103/PhysRevApplied.11.054087},
      url          = {https://juser.fz-juelich.de/record/863055},
}