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 …

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 …

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 …

Direct Measurement of a Current Phase Relation in a Graphene Superconducting Quantum Interference Device

S Messelot, N Aparicio, E De Seze, E Eyraud… - Physical Review Letters, 2024 - APS
In a Josephson junction, the current phase relation relates the phase variation of the
superconducting order parameter φ, between the two superconducting leads connected …

Characterizing losses in InAs two-dimensional electron gas-based gatemon qubits

WM Strickland, LJ Baker, J Lee, K Dindial… - Physical Review …, 2024 - APS
The tunneling of Cooper pairs across a Josephson junction (JJ) allows for the nonlinear
inductance necessary to construct superconducting qubits, amplifiers, and various other …

From nonreciprocal to charge-4e supercurrent in Ge-based Josephson devices with tunable harmonic content

A Leblanc, C Tangchingchai, ZS Momtaz… - Physical Review …, 2024 - APS
Hybrid superconductor (S)-semiconductor (Sm) devices bring a range of functionalities into
superconducting circuits. In particular, hybrid parity-protected qubits and Josephson diodes …

Gate-tunable kinetic inductance parametric amplifier

LJ Splitthoff, JJ Wesdorp, M Pita-Vidal, A Bargerbos… - Physical Review …, 2024 - APS
Superconducting parametric amplifiers play a crucial role in the preparation and readout of
quantum states at microwave frequencies, enabling high-fidelity measurements of …

Gate-tunable phase transition in a resonator-based Su-Schrieffer-Heeger chain

LJ Splitthoff, MC Belo, G Jin, Y Liu, E Greplova… - Physical Review …, 2024 - APS
Metamaterials engineered to host topological states of matter in controllable quantum
systems hold promise for the advancement of quantum simulations and quantum computing …

Gate-control of superconducting current: Mechanisms, parameters and technological potential

L Ruf, C Puglia, T Elalaily, G De Simoni, F Joint… - arXiv preprint arXiv …, 2023 - arxiv.org
In conventional metal-oxide semiconductor (CMOS) electronics, the logic state of a device is
set by a gate voltage (VG). The superconducting equivalent of such effect had remained …

BCS surrogate models for floating superconductor-semiconductor hybrids

VV Baran, J Paaske - Physical Review B, 2024 - APS
Superconductor-semiconductor hybrid devices, involving quantum dots interfaced with
floating and/or grounded superconductors, have reached a level of complexity, which calls …