Superconducting metamaterials and qubits

TL;DR

This paper reports on the fabrication, measurement, and simulation of superconducting metamaterial resonators, highlighting their potential for dense microwave mode spectra in quantum information applications.

Contribution

It introduces new fabrication and simulation methods for superconducting metamaterial resonators and demonstrates their predictive modeling for integration with qubits.

Findings

Successful fabrication and low-temperature measurement of Al thin-film metamaterials

Development of numerical simulation approaches matching experimental spectra

Potential for integrating metamaterials with superconducting qubits

Abstract

Superconducting thin-film metamaterial resonators can provide a dense microwave mode spectrum with potential applications in quantum information science. We report on the fabrication and low-temperature measurement of metamaterial transmission-line resonators patterned from Al thin films. We also describe multiple approaches for numerical simulations of the microwave properties of these structures, along with comparisons with the measured transmission spectra. The ability to predict the mode spectrum based on the chip layout provides a path towards future designs integrating metamaterial resonators with superconducting qubits.