Lukas Grünhaupt

TL;DR: The current level of coherence of grAl resonators makes them attractive for integration in quantum devices, while it also evidences the need to reduce the density of nonequilibrium QPs.

TL;DR: In this article, a fluxonium qubit design based on a granular aluminium superinductor strip was presented, which can form an effective junction array with high kinetic inductance and be in situ integrated with standard aluminium circuit processing.

TL;DR: In this article, a fluxonium qubit design using a granular aluminum superinductor strip was presented, which self-assembles into an effective junction array with a remarkably high kinetic inductance, and its fabrication can be in-situ integrated with standard aluminum processing.

TL;DR: The authors show that resonators made from granular aluminum, which naturally realizes a network of Josephson junctions, have practically useful impedances and nonlinearities.

TL;DR: Operating in a deep-underground lead-shielded cryostat decreases the quasiparticle burst rate by a factor thirty and reduces dissipation up to a factor four, showcasing the importance of radiation abatement in future solid-state quantum hardware.