Universal control of a bosonic mode via drive-activated native cubic interactions

AM Eriksson, T Sépulcre, M Kervinen… - Nature …, 2024 - nature.com
Linear bosonic modes offer a hardware-efficient alternative for quantum information
processing but require access to some nonlinearity for universal control. The lack of …

Charge-4e supercurrent in a two-dimensional InAs-Al superconductor-semiconductor heterostructure

C Ciaccia, R Haller, ACC Drachmann… - Communications …, 2024 - nature.com
Superconducting qubits with intrinsic noise protection offer a promising approach to improve
the coherence of quantum information. Crucial to such protected qubits is the encoding of …

Granular aluminum parametric amplifier for low-noise measurements in tesla fields

N Zapata, I Takmakov, S Günzler, S Geisert, S Ihssen… - Physical Review Letters, 2024 - APS
Josephson junction parametric amplifiers have become essential tools for microwave
quantum circuit readout with minimal added noise. Even after improving at an impressive …

Modeling and harmonic balance analysis of parametric amplifiers for qubit read-out

D Shiri, HR Nilsson, P Telluri, AF Roudsari… - ar**
Y Jiang, EP Ruddy, KO Quinlan, M Malnou, NE Frattini… - PRX Quantum, 2023 - APS
Quantum fluctuations constitute the primary noise barrier limiting cavity-based axion-dark-
matter searches. In an experiment designed to mimic a real axion search, we employ a …

Dissipationless nonlinearity in quantum material Josephson diodes

C Schrade, V Fatemi - Physical Review Applied, 2024 - APS
Dissipationless nonlinearities for three-wave mixing are a key component of many
superconducting quantum devices, such as amplifiers and bosonic qubits. So far, such third …

A black-box quantum model for superconducting traveling-wave parametric amplifiers

M Haider - IEEE Transactions on Microwave Theory and …, 2024 - ieeexplore.ieee.org
Superconducting quantum computing is at the forefront of demonstrating quantum
advantages for revolutionary applications in science and technology. One key component …

Modeling and harmonic balance analysis of superconducting parametric amplifiers for qubit readout: A tutorial

D Shiri, HR Nilsson, P Telluri… - IEEE Microwave …, 2024 - ieeexplore.ieee.org
The parametric modulation of reactive elements in circuits for amplification dates back to
World War I, when Alexanderson and others proposed magnetic amplifiers for radio …

Near-ultrastrong nonlinear light-matter coupling in superconducting circuits

Y Ye, JB Kline, A Yen, G Cunningham, M Tan… - arxiv preprint arxiv …, 2024 - arxiv.org
The interaction between an atom and an electromagnetic mode of a resonator is of both
fundamental interest and is ubiquitous in quantum technologies. Most prior work studies a …

Harmonic balance simulation of the influence of component uniformity and reliability on the performance of a Josephson traveling wave parametric amplifier

Y Zheng, K **ong, J Feng, H Yang - Chinese Physics B, 2024 - iopscience.iop.org
A Josephson traveling wave parametric amplifier (JTWPA), which is a quantum-limited
amplifier with high gain and large bandwidth, is the core device of large-scale measurement …