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

By S. Probst, F. B. Song, P. Bushev, A. Ustinov, M. Weides. Review of Scientific Instruments, 2014

347 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/719d6553c30f5d5eb5c0279f68c62676e790a2f8

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In Atomic and Molecular Physics, and Optics

In Electrical and Electronic Engineering

Citations in the corpus

Coherent Conversion Between Microwave and Optical Photons—An Overview of Physical Implementations (2019, positive): “Typical data for a 3D microwave cavity are shown in Fig 1, and the analysis can be made robust against noise and reflections by including terms describing the environment to which it is coupled [27].”
On-demand directional microwave photon emission using waveguide quantum electrodynamics (2022, background): “For low powers, we observe that |S21| slightly exceeds unity, which we attribute to impedance mismatches in our experimental setup [58, 59].”