Coplanar waveguide resonators for circuit quantum electrodynamics

M. Göppl, A. Fragner, M. Baur, R. Bianchetti, S. Filipp, J.M. Fink, P. Leek, G. Puebla, L. Steffen, A. Wallraff, Journal of Applied Physics 104 (2008).


Journal Article | Published
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Abstract
High quality on-chip microwave resonators have recently found prominent new applications in quantum optics and quantum information processing experiments with superconducting electronic circuits, a field now known as circuit quantum electrodynamics (QED). They are also used as single photon detectors and parametric amplifiers. Here we analyze the physical properties of coplanar waveguide resonators and their relation to the materials properties for use in circuit QED. We have designed and fabricated resonators with fundamental frequencies from 2 to 9 GHz and quality factors ranging from a few hundreds to a several hundred thousands controlled by appropriately designed input and output coupling capacitors. The microwave transmission spectra measured at temperatures of 20 mK are shown to be in good agreement with theoretical lumped element and distributed element transmission matrix models. In particular, the experimentally determined resonance frequencies, quality factors, and insertion losses are fully and consistently explained by the two models for all measured devices. The high level of control and flexibility in design renders these resonators ideal for storing and manipulating quantum electromagnetic fields in integrated superconducting electronic circuits.
Publishing Year
Date Published
2008-01-01
Journal Title
Journal of Applied Physics
Acknowledgement
This work was supported by Swiss National Fund (SNF) and ETH Zürich. P.J.L. was supported by the EC with a MC-EIF
Volume
104
Issue
11
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Göppl M, Fragner A, Baur M, et al. Coplanar waveguide resonators for circuit quantum electrodynamics. Journal of Applied Physics. 2008;104(11). doi:10.1063/1.3010859
Göppl, M., Fragner, A., Baur, M., Bianchetti, R., Filipp, S., Fink, J. M., … Wallraff, A. (2008). Coplanar waveguide resonators for circuit quantum electrodynamics. Journal of Applied Physics, 104(11). https://doi.org/10.1063/1.3010859
Göppl, M, A Fragner, Matthias Baur, R Bianchetti, Stefan Filipp, Johannes M Fink, Peter Leek, G Puebla, L. Steffen, and Andreas Wallraff. “Coplanar Waveguide Resonators for Circuit Quantum Electrodynamics.” Journal of Applied Physics 104, no. 11 (2008). https://doi.org/10.1063/1.3010859.
M. Göppl et al., “Coplanar waveguide resonators for circuit quantum electrodynamics,” Journal of Applied Physics, vol. 104, no. 11, 2008.
Göppl M, Fragner A, Baur M, Bianchetti R, Filipp S, Fink JM, Leek P, Puebla G, Steffen L, Wallraff A. 2008. Coplanar waveguide resonators for circuit quantum electrodynamics. Journal of Applied Physics. 104(11).
Göppl, M., et al. “Coplanar Waveguide Resonators for Circuit Quantum Electrodynamics.” Journal of Applied Physics, vol. 104, no. 11, American Institute of Physics, 2008, doi:10.1063/1.3010859.

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