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Time-resolved measurement of capacitance in a Josephson tunnel junction
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10.1063/1.2338778
/content/aip/journal/apl/89/8/10.1063/1.2338778
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/8/10.1063/1.2338778

Figures

Image of FIG. 1.
FIG. 1.

(a) Washboard potential and the equivalent circuit (inset) of a current-biased Josephson tunnel junction with . is the effective shunt resistance of Josephson junction embedded in the bias circuitry. (b) Schematic time profiles for measuring the escape time of a Josephson junction subjected to a microwave irradiation.

Image of FIG. 2.
FIG. 2.

Lifetime of zero-voltage state with and without microwave irradiation at . The squares are measured lifetimes without microwave. The determined from the best fit is . The other curves are the measured lifetimes with microwave. The microwave frequency are , 19.9, 19.8, 19.7, and , respectively. And each curve has a maximum (indicated by arrows) at different where .

Image of FIG. 3.
FIG. 3.

Simulation results of the reduced lifetime of zero-voltage state vs normalized bias current, where is the plasma frequency at zero bias current.

Tables

Generic image for table
Table I.

at different , from which , systematic error , and relative error are obtained.

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/content/aip/journal/apl/89/8/10.1063/1.2338778
2006-08-25
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Time-resolved measurement of capacitance in a Josephson tunnel junction
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/8/10.1063/1.2338778
10.1063/1.2338778
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