Time-reversal-invariant topological superconductivity in one and two dimensions

A Haim, Y Oreg - Physics Reports, 2019 - Elsevier
A topological superconductor is characterized by having a pairing gap in the bulk and
gapless self-hermitian Majorana modes at its boundary. In one dimension, these are zero …

The Anderson–Josephson quantum dot—a theory perspective

V Meden - Journal of Physics: Condensed Matter, 2019 - iopscience.iop.org
Recent progress in nanoscale manufacturing has allowed to experimentally investigate
quantum dots coupled to two superconducting leads in controlled and tunable setups. The …

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 …

Andreev bound states in supercurrent-carrying carbon nanotubes revealed

JD Pillet, CHL Quay, P Morfin, C Bena, AL Yeyati… - Nature Physics, 2010 - nature.com
Carbon nanotubes (CNTs) are not intrinsically superconducting but they can carry a
supercurrent when connected to superconducting electrodes,,,. This supercurrent is mainly …

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 …

Tunneling spectroscopy of quasiparticle bound states in a spinful Josephson junction

W Chang, VE Manucharyan, TS Jespersen, J Nygård… - Physical review …, 2013 - APS
The spectrum of a segment of InAs nanowire, confined between two superconducting leads,
was measured as function of gate voltage and superconducting phase difference using a …

Signatures of interactions in the Andreev spectrum of nanowire Josephson junctions

FJ Matute-Cañadas, C Metzger, S Park, L Tosi… - Physical Review Letters, 2022 - APS
We performed microwave spectroscopy of an InAs nanowire between superconducting
contacts implementing a finite-length, multichannel Josephson weak link. Certain features in …

Superfluid signatures in a dissipative quantum point contact

MZ Huang, J Mohan, AM Visuri, P Fabritius, M Talebi… - Physical Review Letters, 2023 - APS
We measure superfluid transport of strongly interacting fermionic lithium atoms through a
quantum point contact with local, spin-dependent particle loss. We observe that the …

Nonsinusoidal current-phase relations in semiconductor–superconductor–ferromagnetic insulator devices

A Maiani, K Flensberg, M Leijnse, C Schrade… - Physical Review B, 2023 - APS
Coherent tunneling processes of multiple Cooper pairs across a Josephson junction give
rise to high harmonics in the current phase relation. In this work, we propose and study …

Shiba states and zero-bias anomalies in the hybrid normal-superconductor Anderson model

R Žitko, JS Lim, R López, R Aguado - Physical Review B, 2015 - APS
Hybrid semiconductor-superconductor systems are interesting melting pots where various
fundamental effects in condensed-matter physics coexist. For example, when a quantum dot …