Today, most superconducting microwave resonators are made of ordinary, straight wires. A conventional single-wire resonator has an impedance bounded by the impedance of free space (377 Ω). In contrast, the resonators that we are developing reach impedances in the order of 104 Ω by harnessing the mutual-inductance between concentric loops in a spiral pattern. Eventually, such low-loss superinductors can be used for new qubit designs that are robust against noise and for hybrid quantum architectures coupling superonducting circuits to spin qubits.
Funded projects
“Spiraling into control: ultra high-impedance superconducting resonators for strongly-coupled spin-cavity QED”
National Science Foundation – with Prof. Nichol @ UofR
Relevant Publications
Magnetic Field Tolerant Superconducting Spiral Resonators for Circuit QED
M. Medahinne, Y.P. Kandel, S. Thapa Magar, E. Champion, J.M. Nichol, and M.S. Blok
(submitted, 2024) | Arxiv:2406.10386