Tunable resonators for quantum circuits

A. Palacios-Laloy (QUANTRONICS); D. Esteve (QUANTRONICS); D. Vion (QUANTRONICS); F. Mallet (QUANTRONICS); F. Nguyen (QUANTRONICS); P. Bertet (QUANTRONICS)

arxiv: 0712.0221 · v1 · submitted 2007-12-03 · 🪐 quant-ph · cond-mat.mes-hall· cond-mat.supr-con

Tunable resonators for quantum circuits

A. Palacios-Laloy (QUANTRONICS) , F. Nguyen (QUANTRONICS) , F. Mallet (QUANTRONICS) , P. Bertet (QUANTRONICS) , D. Vion (QUANTRONICS) , D. Esteve (QUANTRONICS) This is my paper

classification 🪐 quant-ph cond-mat.mes-hallcond-mat.supr-con

keywords fieldfactorfrequencymagneticqualityresonatorstunableaccounts

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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 3$\times10^4$. We present a model based on thermal fluctuations that accounts for the dependance of the quality factor with magnetic field.

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Tunable resonators for quantum circuits

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