Circuit quantum electrodynamics

A Blais, AL Grimsmo, SM Girvin, A Wallraff - Reviews of Modern Physics, 2021 - APS
Quantum-mechanical effects at the macroscopic level were first explored in Josephson-
junction-based superconducting circuits in the 1980s. In recent decades, the emergence of …

Blueprint for a high-performance fluxonium quantum processor

LB Nguyen, G Koolstra, Y Kim, A Morvan, T Chistolini… - PRX Quantum, 2022 - APS
Transforming stand-alone qubits into a functional, general-purpose quantum processing unit
requires an architecture where many-body quantum entanglement can be generated and …

Correlating decoherence in transmon qubits: Low frequency noise by single fluctuators

S Schlör, J Lisenfeld, C Müller, A Bilmes, A Schneider… - Physical review …, 2019 - APS
We report on long-term measurements of a highly coherent, nontunable superconducting
transmon qubit, revealing low-frequency burst noise in coherence times and qubit transition …

Dynamics of superconducting qubit relaxation times

M Carroll, S Rosenblatt, P Jurcevic, I Lauer… - npj Quantum …, 2022 - nature.com
Superconducting qubits are a leading candidate for quantum computing but display
temporal fluctuations in their energy relaxation times T 1. This introduces instabilities in multi …

Observation of Josephson harmonics in tunnel junctions

D Willsch, D Rieger, P Winkel, M Willsch, C Dickel… - Nature Physics, 2024 - nature.com
Approaches to developing large-scale superconducting quantum processors must cope with
the numerous microscopic degrees of freedom that are ubiquitous in solid-state devices …

The information content of jet quenching and machine learning assisted observable design

YS Lai, J Mulligan, M Płoskoń, F Ringer - Journal of High Energy Physics, 2022 - Springer
A bstract Jets produced in high-energy heavy-ion collisions are modified compared to those
in proton-proton collisions due to their interaction with the deconfined, strongly-coupled …

Effects of laser-annealing on fixed-frequency superconducting qubits

H Kim, C Jünger, A Morvan, ES Barnard… - Applied Physics …, 2022 - pubs.aip.org
As superconducting quantum processors increase in complexity, techniques to overcome
constraints on frequency crowding are needed. The recently developed method of laser …

Resolving nonperturbative renormalization of a microwave-dressed weakly anharmonic superconducting qubit coupled to a single quantized mode

B Ann, S Deve, GA Steele - Physical review letters, 2023 - APS
Microwave driving is a ubiquitous technique for superconducting qubits, but the dressed
states description based on the conventionally used perturbation theory cannot fully capture …

All-microwave manipulation of superconducting qubits with a fixed-frequency transmon coupler

S Shirai, Y Okubo, K Matsuura, A Osada… - Physical Review Letters, 2023 - APS
All-microwave control of fixed-frequency superconducting quantum computing circuits is
advantageous for minimizing the noise channels and wiring costs. Here we introduce a …

Two-level system as a quantum sensor for absolute calibration of power

T Hönigl-Decrinis, R Shaikhaidarov, SE De Graaf… - Physical Review …, 2020 - APS
A two-level quantum system can absorb or emit not more than one photon at a time. Using
this fundamental property, we demonstrate how a superconducting quantum system strongly …