Engineering high-coherence superconducting qubits

I Siddiqi - Nature Reviews Materials, 2021 - nature.com
Advances in materials science and engineering have played a central role in the
development of classical computers and will undoubtedly be critical in propelling the …

Towards practical quantum computers: Transmon qubit with a lifetime approaching 0.5 milliseconds

C Wang, X Li, H Xu, Z Li, J Wang, Z Yang, Z Mi… - npj Quantum …, 2022 - nature.com
Here we report a breakthrough in the fabrication of a long lifetime transmon qubit. We use
tantalum films as the base superconductor. By using a dry etching process, we obtained …

Tuning microwave losses in superconducting resonators

A Gurevich - Superconductor Science and Technology, 2023 - iopscience.iop.org
The performance of superconducting resonators, particularly cavities for particle
accelerators and micro cavities and thin film resonators for quantum computations and …

Towards scalable bosonic quantum error correction

BM Terhal, J Conrad, C Vuillot - Quantum Science and …, 2020 - iopscience.iop.org
We review some of the recent efforts in devising and engineering bosonic qubits for
superconducting devices, with emphasis on the Gottesman–Kitaev–Preskill (GKP) qubit. We …

[PDF][PDF] Rohstoffe für Zukunftstechnologien 2021: Auftragsstudie

F Marscheider-Weidemann - Rohstoffe für Zukunftstechnologien 2021 …, 2021 - zbw.eu
Mineralische Rohstoffe sind für die industrielle Wertschöpfung, den technologischen
Fortschritt und den Erhalt unseres Wohlstands unverzichtbar. Sie leisten einen wichtigen …

Energy-participation quantization of Josephson circuits

ZK Minev, Z Leghtas, SO Mundhada… - npj Quantum …, 2021 - nature.com
Superconducting microwave circuits incorporating nonlinear devices, such as Josephson
junctions, are a leading platform for emerging quantum technologies. Increasing circuit …

Observation of Josephson harmonics in tunnel junctions

D Willsch, D Rieger, P Winkel, M Willsch, C Dickel… - Nature Physics, 2024 - nature.com
Approaches to develo** large-scale superconducting quantum processors must cope with
the numerous microscopic degrees of freedom that are ubiquitous in solid-state devices …

Granular aluminium nanojunction fluxonium qubit

D Rieger, S Günzler, M Spiecker, P Paluch, P Winkel… - Nature Materials, 2023 - nature.com
Mesoscopic Josephson junctions, consisting of overlap** superconducting electrodes
separated by a nanometre-thin oxide layer, provide a precious source of nonlinearity for …

Magnetic field-resilient quantum-limited parametric amplifier

M Xu, R Cheng, Y Wu, G Liu, HX Tang - PRX Quantum, 2023 - APS
Superconducting parametric amplifiers are crucial components in microwave quantum
circuits for enabling quantum-limited signal readout. The best-performing such amplifiers are …

Fano interference in microwave resonator measurements

D Rieger, S Günzler, M Spiecker, A Nambisan… - Physical Review …, 2023 - APS
Resonator measurements are a simple but powerful tool to characterize a material's
microwave response. The losses of a resonant mode are quantified by its internal quality …