Low-loss tunable metamaterials using superconducting circuits with Josephson junctions

Philipp Jung; Susanne Butz; Sergey V. Shitov; Alexey V. Ustinov

doi:10.1063/1.4792705

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arXiv · 1301.0440

Low-loss tunable metamaterials using superconducting circuits with Josephson junctions

Philipp Jung·Susanne Butz·Sergey V. Shitov·Alexey V. Ustinov

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Abstract

We report on experiments with superconducting metamaterials containing Josephson junctions. In these structures, split-ring resonators used in conventional metamaterials are replaced by superconducting loops that are interrupted by Josephson junctions, so called rf-SQUIDs. Like the split-ring resonators, these elements can be seen as LC-resonators that couple to the magnetic field. The advantage of superconducting thin-film metamaterials is that, due to the tunable intrinsic inductance of the Josephson junction, the resonance frequency of the rf-SQUID can be changed by applying an external dc magnetic field. We present experimental results that demonstrate the tunability of the resonance frequency of these devices.

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Philipp Jung, Susanne Butz, Sergey V. Shitov, Alexey V. Ustinov. 2013-01-03. Low-loss tunable metamaterials using superconducting circuits with Josephson junctions. https://doi.org/10.1063/1.4792705

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