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Title: Efficient and robust analysis of complex scattering data under noise in microwave resonators

Superconducting microwave resonators are reliable circuits widely used for detection and as test devices for material research. A reliable determination of their external and internal quality factors is crucial for many modern applications, which either require fast measurements or operate in the single photon regime with small signal to noise ratios. Here, we use the circle fit technique with diameter correction and provide a step by step guide for implementing an algorithm for robust fitting and calibration of complex resonator scattering data in the presence of noise. The speedup and robustness of the analysis are achieved by employing an algebraic rather than an iterative fit technique for the resonance circle.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [1] ;  [5]
  1. Physikalisches Institut, Karlsruhe Institute of Technology, D-76128 Karlsruhe (Germany)
  2. (China)
  3. Experimentalphysik, Universität des Saarlandes, D-66123 Saarbrücken (Germany)
  4. (Russian Federation)
  5. (Germany)
Publication Date:
OSTI Identifier:
22392380
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ALGORITHMS; CALIBRATION; CORRECTIONS; DETECTION; MICROWAVE RADIATION; NOISE; PHOTONS; QUALITY FACTOR; RESONANCE; RESONATORS; SCATTERING