Carbon nanotube devices for quantum technology

A Baydin, F Tay, J Fan, M Manjappa, W Gao, J Kono - Materials, 2022 - mdpi.com
Carbon nanotubes, quintessentially one-dimensional quantum objects, possess a variety of
electrical, optical, and mechanical properties that are suited for develo** devices that …

A gate tunable transmon qubit in planar Ge

O Sagi, A Crippa, M Valentini, M Janik… - Nature …, 2024 - nature.com
Gate-tunable transmons (gatemons) employing semiconductor Josephson junctions have
recently emerged as building blocks for hybrid quantum circuits. In this study, we present a …

A gate-tunable graphene Josephson parametric amplifier

G Butseraen, A Ranadive, N Aparicio… - Nature …, 2022 - nature.com
With a large portfolio of elemental quantum components, superconducting quantum circuits
have contributed to advances in microwave quantum optics. Of these elements, quantum …

Gate-tunable transmon using selective-area-grown superconductor-semiconductor hybrid structures on silicon

A Hertel, M Eichinger, LO Andersen… - Physical Review …, 2022 - APS
We present a gate-voltage-tunable transmon qubit (gatemon) based on planar In As
nanowires that are selectively grown on a high-resistivity silicon substrate using III-V buffer …

Magnetic field-resilient quantum-limited parametric amplifier

M Xu, R Cheng, Y Wu, G Liu, HX Tang - PRX Quantum, 2023 - APS
Superconducting parametric amplifiers are crucial components in microwave quantum
circuits for enabling quantum-limited signal readout. The best-performing such amplifiers are …

Gatemon qubit on a germanium quantum-well heterostructure

E Kiyooka, C Tangchingchai, L Noirot, A Leblanc… - Nano Letters, 2024 - ACS Publications
Gatemons are superconducting qubits resembling transmons, with a gate-tunable
semiconducting weak link as the Josephson element. Here, we report a gatemon device …

Coherent control of a few-channel hole type gatemon qubit

H Zheng, LY Cheung, N Sangwan, A Kononov… - Nano Letters, 2024 - ACS Publications
Gatemon qubits are the electrically tunable cousins of superconducting transmon qubits. In
this work, we demonstrate the full coherent control of a gatemon qubit based on hole carriers …

Nano-assembled open quantum dot nanotube devices

T Althuon, T Cubaynes, A Auer, C Sürgers… - Communications …, 2024 - nature.com
A pristine suspended carbon nanotube is a near ideal environment to host long-lived
quantum states. For this reason, they have been used as the core element of qubits and to …

Magnetic Field Resilience of Three-Dimensional Transmons with Thin-Film Josephson Junctions Approaching 1 T

J Krause, C Dickel, E Vaal, M Vielmetter, J Feng… - Physical review applied, 2022 - APS
Magnetic-field-resilient superconducting circuits enable sensing applications and hybrid
quantum computing architectures involving spin or topological qubits and electromechanical …

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 …