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 …

Flux-tunable Josephson effect in a four-terminal junction

CG Prosko, WD Huisman, I Kulesh, D **ao, C Thomas… - Physical Review B, 2024 - APS
We study a phase-tunable four-terminal Josephson junction formed in an InSbAs two-
dimensional electron gas proximitized by aluminum. By embedding the two pairs of junction …

Interplay between Majorana and Shiba states in a minimal Kitaev chain coupled to a superconductor

M Alvarado, AL Yeyati, R Aguado, RS Souto - Physical Review B, 2024 - APS
Two semiconducting quantum dots (QDs) coupled through a superconductor constitute a
minimal realization of a Kitaev chain with Majorana zero modes (MZMs). Such MZMs can be …

Subgap States in Semiconductor-Superconductor Devices for Quantum Technologies: Andreev Qubits and Minimal Majorana Chains

R Seoane Souto, R Aguado - New Trends and Platforms for Quantum …, 2024 - Springer
In recent years, experimental advances have made it possible to achieve an unprecedented
degree of control over the properties of subgap bound states in hybrid nanoscale …

Impurity States in Altermagnetic Superconductors

A Maiani, RS Souto - arxiv preprint arxiv:2409.01008, 2024 - arxiv.org
Altermagnetic superconductors hold the potential for novel phenomena, including
topological states, finite-momentum superconductivity, as well as promising applications in …