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 …

Spectroscopy of spin-split Andreev levels in a quantum dot with superconducting leads

A Bargerbos, M Pita-Vidal, R Žitko, LJ Splitthoff… - Physical review …, 2023‏ - APS
We use a hybrid superconductor-semiconductor transmon device to perform spectroscopy of
a quantum dot Josephson junction tuned to be in a spin-1/2 ground state with an unpaired …

Direct Microwave Spectroscopy of Andreev Bound States in Planar Josephson Junctions

M Hinderling, SC Ten Kate, M Coraiola, DZ Haxell… - PRX Quantum, 2024‏ - APS
We demonstrate microwave measurements of the Andreev-bound-state (ABS) spectrum in
planar Josephson junctions (JJs) defined in Ge high-mobility two-dimensional hole gases …

Blueprint for All-to-All-Connected Superconducting Spin Qubits

M Pita-Vidal, JJ Wesdorp, CK Andersen - PRX Quantum, 2025‏ - APS
Andreev (or superconducting) spin qubits (ASQs) have recently emerged as a promising
qubit platform that combines superconducting circuits with semiconductor spin degrees of …

InAs on insulator: A new platform for cryogenic hybrid superconducting electronics

A Paghi, G Trupiano, G De Simoni, O Arif… - Advanced Functional …, 2024‏ - Wiley Online Library
Superconducting circuits based on hybrid InAs Josephson Junctions (JJs) play a starring
role in the design of fast and ultra‐low power consumption solid‐state quantum electronics …

Many-body quantum dynamics of spin-orbit coupled Andreev states in a Zeeman field

K Zatsarynna, A Nava, A Zazunov, R Egger - Physical Review B, 2024‏ - APS
We provide a theoretical framework to describe the quantum many-body dynamics of
Andreev states in Josephson junctions with spin-orbit coupling and a magnetic Zeeman …

Microwave signatures of topological superconductivity in planar Josephson junctions

B Pekerten, D Brandão, BH Elfeky, T Zhou, JE Han… - Physical Review B, 2024‏ - APS
Planar Josephson junctions provide a platform to host topological superconductivity, which,
through manipulating Majorana bound states (MBS), could enable fault-tolerant quantum …

Strong nonlocal tuning of the current-phase relation of a quantum dot based Andreev molecule

M Kocsis, Z Scherübl, G Fülöp, P Makk, S Csonka - Physical Review B, 2024‏ - APS
Recent realization of minimal Kitaev chains brought a breakthrough in Majorana research,
which made arrays of quantum dots coupled by superconductor spacers the most promising …

Direct manipulation of a superconducting spin qubit strongly coupled to a transmon qubit

M Pita-Vidal, A Bargerbos, R Žitko, LJ Splitthoff… - Nature Physics, 2023‏ - nature.com
Spin qubits in semiconductors are a promising platform for producing highly scalable
quantum computing devices. However, it is difficult to realize multiqubit interactions over …

Opportunities for the direct manipulation of a phase-driven Andreev spin qubit

Y Fauvel, JS Meyer, M Houzet - Physical Review B, 2024‏ - APS
In a Josephson junction, the transfer of Cooper pairs from one superconductor to the other
one can be associated with the formation of Andreev bound states. In a Josephson junction …