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Improving the quality factor of microwave compact resonators by optimizing their geometrical parameters
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10.1063/1.4710520
/content/aip/journal/apl/100/19/10.1063/1.4710520
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/19/10.1063/1.4710520
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of compact resonator and inset showing resonator parameters. The compact resonator is coupled inductively to the CPW feedline. The parameters indicated in the inset directly affect the participation of the insulator and metal surfaces to the reactive elements of the resonator.

Image of FIG. 2.
FIG. 2.

Two extreme examples of resonator response curves fit with Eq. (1). Responses typically fall in between (a) symmetric and (b) strongly asymmetric about the resonant frequency.

Image of FIG. 3.
FIG. 3.

Dependence of on parameter values. The changes in for a given mutant value are reported in reference to the average (160 000) of design A with positive values representing improvements. The shaded column indicates the design A value of that parameter; in this column is zero by definition. The square in each row with a bold border shows the value chosen for design B. Parameters for design C cannot easily be shown on this figure as explained in the main text.

Image of FIG. 4.
FIG. 4.

Histograms of single-photon internal quality factors for designs A, B, and C resonators with ion-milling and designs A and B without ion-milling. Qi improves steadily from design A to B to C. For both designs A and B resonators, when ion-milling is not performed, is roughly a factor of four lower.

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/content/aip/journal/apl/100/19/10.1063/1.4710520
2012-05-07
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Improving the quality factor of microwave compact resonators by optimizing their geometrical parameters
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/19/10.1063/1.4710520
10.1063/1.4710520
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