Tunable resonators for quantum circuits
A. Palacios-Laloy (QUANTRONICS), F. Nguyen (QUANTRONICS), F. Mallet, (QUANTRONICS), P. Bertet (QUANTRONICS), D. Vion (QUANTRONICS), D. Esteve, (QUANTRONICS)
TL;DR
This paper presents the design, fabrication, and measurement of high-Q tunable microwave resonators with magnetic field control using DC-SQUID arrays, achieving significant tunability and high quality factors.
Contribution
It introduces a novel tunable resonator design incorporating DC-SQUID arrays for magnetic field tuning with a comprehensive thermal fluctuation model.
Findings
Tunable range of 30% of the zero-field frequency.
Quality factor up to 3×10^4.
Model explains quality factor dependence on magnetic field.
Abstract
We have designed, fabricated and measured high-Q 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 3. We present a model based on thermal fluctuations that accounts for the dependance of the quality factor with magnetic field.
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Taxonomy
TopicsSemiconductor Lasers and Optical Devices