Journal
JOURNAL OF LOW TEMPERATURE PHYSICS
Volume 151, Issue 3-4, Pages 1034-1042Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-008-9774-x
Keywords
stripline resonators; superconducting quantum devices; SQUIDs
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We have designed, fabricated and measured high-Q lambda/2 coplanar waveguide microwave resonators whose resonance frequency is made tunable with magnetic field by inserting a DC-SQUID array (including 1 or 7 SQUIDs) inside. Their tunability range is 30% of the zero field frequency. Their quality factor reaches up to 3x10(4). We present a model based on thermal fluctuations that accounts for the dependence of the quality factor with magnetic field.
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