Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium

M Valentini, O Sagi, L Baghumyan, T de Gijsel… - Nature …, 2024 - nature.com
Superconductor/semiconductor hybrid devices have attracted increasing interest in the past
years. Superconducting electronics aims to complement semiconductor technology, while …

Tunable crossed Andreev reflection and elastic cotunneling in hybrid nanowires

A Bordin, G Wang, CX Liu, SLD Ten Haaf, N Van Loo… - Physical Review X, 2023 - APS
A short superconducting segment can couple attached quantum dots via elastic cotunneling
(ECT) and crossed Andreev reflection (CAR). Such coupled quantum dots can host …

From perfect to imperfect poor man's Majoranas in minimal Kitaev chains

M Luethi, HF Legg, D Loss, J Klinovaja - Physical Review B, 2024 - APS
Poor man's Majoranas (PMMs) hold the promise to engineer Majorana bound states in a
highly tunable setup consisting of a chain of quantum dots that are connected via …

Coupling of quantum-dot states via elastic cotunneling and crossed Andreev reflection in a minimal Kitaev chain

ZH Liu, C Zeng, HQ Xu - Physical Review B, 2024 - APS
We consider a quantum-dot (QD) based minimal Kitaev chain model and study the effects of
modulation of QD states on the elastic cotunneling (ECT) and crossed Andreev reflection …

Spin–orbit interaction enabled high-fidelity two-qubit gates

J Qi, ZH Liu, H Xu - New Journal of Physics, 2024 - iopscience.iop.org
We study the implications of spin–orbit interaction (SOI) for two-qubit gates (TQGs) in
semiconductor spin qubit platforms. SOI renders the exchange interaction governing qubit …

Radio frequency driven superconducting diode and parity conserving Cooper pair transport in a two-dimensional germanium hole gas

M Valentini, O Sagi, L Baghumyan, T Gijsel… - …, 2023 - research-explorer.ista.ac.at
Superconductor/semiconductor hybrid devices have attracted increasing interest in the past
years. Superconducting electronics aims to complement semiconductor technology, while …

A singlet-triplet hole-spin qubit in MOS silicon

SD Liles, DJ Halverson, Z Wang, A Shamim… - arXiv preprint arXiv …, 2023 - arxiv.org
Holes in silicon quantum dots are promising for spin qubit applications due to the strong
intrinsic spin-orbit coupling. The spin-orbit coupling produces complex hole-spin dynamics …

Microwave driven singlet-triplet qubits enabled by site-dependent g-tensors

J Saez-Mollejo, D Jirovec, Y Schell, J Kukucka… - arXiv preprint arXiv …, 2024 - arxiv.org
Hole spin qubits are rapidly emerging as the workhorse of semiconducting quantum
processors because of their large spin-orbit interaction, enabling fast all-electric operations …

Spin-resolved nonlocal transport in proximitized Rashba nanowires

P Szumniak, D Loss, J Klinovaja - Physical Review B, 2024 - APS
Nonequilibrium transport in hybrid semiconductor-superconductor nanowires is crucial for
many quantum phenomena such as generating entangled states via cross Andreev …

Exchange-Only Spin-Orbit Qubits in Silicon and Germanium

S Bosco, M Rimbach-Russ - arXiv preprint arXiv:2410.05461, 2024 - arxiv.org
The strong spin-orbit interaction in silicon and germanium hole quantum dots enables all-
electric microwave control of single spins but is unsuited for multi-spin exchange-only qubits …