Granular Aluminum Meandered Superinductors for Quantum Circuits
Plamen Kamenov, Wen-Sen Lu, Konstantin Kalashnikov, Thomas DiNapoli,, Matthew T. Bell, Michael E. Gershenson
TL;DR
This paper presents the design and fabrication of granular Aluminum meandered superinductors with high inductance and self-resonance frequency, suitable for advanced quantum and microwave applications.
Contribution
It introduces a novel implementation of superinductors using granular Aluminum nanowires with optimized geometry for high performance.
Findings
Achieved inductance of approximately 1 μH
Self-resonance frequency over 3 GHz
Compact design suitable for various quantum and microwave devices
Abstract
We have designed superinductors made of strongly disordered superconductors for implementation in "hybrid" superconducting quantum circuits. The superinductors have been fabricated as meandered nanowires made of granular Aluminum films. Optimization of the device geometry enabled realization of superinductors with the inductance and the self-resonance frequency over 3 GHz. These compact superinductors are attractive for a wide range of applications, from superconducting circuits for quantum computing to microwave elements of cryogenic parametric amplifiers and kinetic-inductance photon detectors.
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