Colloquium: Spin-orbit effects in superconducting hybrid structures

M Amundsen, J Linder, JWA Robinson, I Žutić… - Reviews of Modern …, 2024 - APS
Spin-orbit coupling (SOC) relates to the interaction between an electron's motion and its spin
and is ubiquitous in solid-state systems. Although the effect of SOC in normal-state …

Strong tunable coupling between two distant superconducting spin qubits

M Pita-Vidal, JJ Wesdorp, LJ Splitthoff, A Bargerbos… - Nature Physics, 2024 - nature.com
Andreev spin qubits have recently emerged as an alternative qubit platform with realizations
in semiconductor–superconductor hybrid nanowires. In these qubits, the spin degree of …

Singlet-doublet transitions of a quantum dot Josephson junction detected in a transmon circuit

A Bargerbos, M Pita-Vidal, R Žitko, J Ávila, LJ Splitthoff… - PRX Quantum, 2022 - APS
We realize a hybrid superconductor-semiconductor transmon device in which the
Josephson effect is controlled by a gate-defined quantum dot in an In As-Al nanowire …

A Josephson phase battery

E Strambini, A Iorio, O Durante, R Citro… - Nature …, 2020 - nature.com
A classical battery converts chemical energy into a persistent voltage bias that can power
electronic circuits. Similarly, a phase battery is a quantum device that provides a persistent …

Demonstration of the nonlocal Josephson effect in Andreev molecules

DZ Haxell, M Coraiola, M Hinderling, SC Ten Kate… - Nano Letters, 2023 - ACS Publications
We perform switching current measurements of planar Josephson junctions (JJs) coupled by
a common superconducting electrode with independent control over the two …

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 overlapping superconducting electrodes
separated by a nanometre-thin oxide layer, provide a precious source of nonlinearity for …

Measurements of phase dynamics in planar Josephson junctions and SQUIDs

DZ Haxell, E Cheah, F Křížek, R Schott, MF Ritter… - Physical Review Letters, 2023 - APS
We experimentally investigate the stochastic phase dynamics of planar Josephson junctions
(JJs) and superconducting quantum interference devices (SQUIDs) defined in epitaxial …

Implementation of a transmon qubit using superconducting granular aluminum

P Winkel, K Borisov, L Grünhaupt, D Rieger… - Physical Review X, 2020 - APS
The high kinetic inductance offered by granular aluminum (grAl) has recently been
employed for linear inductors in superconducting high-impedance qubits and kinetic …

Mitigation of quasiparticle loss in superconducting qubits by phonon scattering

A Bargerbos, LJ Splitthoff, M Pita-Vidal, JJ Wesdorp… - Physical Review …, 2023 - APS
Quantum error correction will be an essential ingredient in realizing fault-tolerant quantum
computing. However, most correction schemes rely on the assumption that errors are …

Quasiparticles in superconducting qubits with asymmetric junctions

G Marchegiani, L Amico, G Catelani - PRX Quantum, 2022 - APS
Designing the spatial profile of the superconducting gap—gap engineering—has long been
recognized as an effective way of controlling quasiparticles in superconducting devices. In …