Material matters in superconducting qubits

CE Murray - Materials Science and Engineering: R: Reports, 2021 - Elsevier
The progress witnessed within the field of quantum computing has been enabled by the
identification and understanding of interactions between the state of the quantum bit (qubit) …

Magnetic-field-resilient superconducting coplanar-waveguide resonators for hybrid circuit quantum electrodynamics experiments

JG Kroll, F Borsoi, KL Van Der Enden, W Uilhoorn… - Physical Review …, 2019 - APS
Superconducting coplanar-waveguide resonators that can operate in strong magnetic fields
are important tools for a variety of high-frequency superconducting devices. Magnetic fields …

Uncovering topological edge states in twisted bilayer graphene

M Fortin-Deschênes, R Pu, YF Zhou, C Ma… - Nano Letters, 2022 - ACS Publications
Twisted bilayer graphene (t-BLG) has recently been introduced as a rich physical platform
displaying flat electronic bands, strongly correlated states, and unconventional …

Ultra-low-noise microwave to optics conversion in gallium phosphide

R Stockill, M Forsch, F Hijazi, G Beaudoin… - Nature …, 2022 - nature.com
Mechanical resonators can act as excellent intermediaries to interface single photons in the
microwave and optical domains due to their high quality factors. Nevertheless, the optical …

Multi-mode ultra-strong coupling in circuit quantum electrodynamics

SJ Bosman, MF Gely, V Singh, A Bruno… - npj Quantum …, 2017 - nature.com
With the introduction of superconducting circuits into the field of quantum optics, many
experimental demonstrations of the quantum physics of an artificial atom coupled to a single …

A ballistic graphene superconducting microwave circuit

FE Schmidt, MD Jenkins, K Watanabe… - Nature …, 2018 - nature.com
Josephson junctions (JJ) are a fundamental component of microwave quantum circuits, such
as tunable cavities, qubits, and parametric amplifiers. Recently developed encapsulated …

Performance of high impedance resonators in dirty dielectric environments

JH Ungerer, D Sarmah, A Kononov, J Ridderbos… - EPJ Quantum …, 2023 - Springer
High-impedance resonators are a promising contender for realizing long-distance
entangling gates between spin qubits. Often, the fabrication of spin qubits relies on the use …

Cavity electromechanics with parametric mechanical driving

D Bothner, S Yanai, A Iniguez-Rabago, M Yuan… - Nature …, 2020 - nature.com
Microwave optomechanical circuits have been demonstrated to be powerful tools for both
exploring fundamental physics of macroscopic mechanical oscillators, as well as being …

InAs/MoRe hybrid semiconductor/superconductor nanowire devices

B Kousar, DJ Carrad, L Stampfer, P Krogstrup… - Nano Letters, 2022 - ACS Publications
Implementing superconductors capable of proximity-inducing a large energy gap in
semiconductors in the presence of strong magnetic fields is a major goal toward applications …

Superconducting contacts to a monolayer semiconductor

M Ramezani, IC Sampaio, K Watanabe… - Nano Letters, 2021 - ACS Publications
We demonstrate superconducting vertical interconnect access (VIA) contacts to a monolayer
of molybdenum disulfide (MoS2), a layered semiconductor with highly relevant electronic …