Coplanar Waveguide Resonators for Circuit Quantum Electrodynamics

Details Coplanar Waveguide Resonators for Circuit Quantum Electrodynamics Coplanar Waveguide Resonators for Circuit Quantum Electrodynamics

2008-07-25

arxiv.org/abs/0807.4094v1

J. Appl. Phys. 104, 113904 (2008)

Physics

Condensed Matter

Superconductivity

8 pages, 8 figures, version with high resolution figures available at http://qudev.ethz.ch/content/science/PubsPapers.html

Scientific paper

10.1063/1.3010859

We have designed and fabricated superconducting coplanar waveguide resonators with fundamental frequencies from 2 to $9 \rm{GHz}$ and loaded quality factors ranging from a few hundreds to a several hundred thousands reached at temperatures of $20 \rm{mK}$. The loaded quality factors are controlled by appropriately designed input and output coupling capacitors. The measured transmission spectra are analyzed using both a lumped element model and a distributed element transmission matrix method. The experimentally determined resonance frequencies, quality factors and insertion losses are fully and consistently characterized by the two models for all measured devices. Such resonators find prominent applications in quantum optics and quantum information processing with superconducting electronic circuits and in single photon detectors and parametric amplifiers.

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