Josephson parametric amplifier with Chebyshev gain profile and high saturation

R Kaufman, T White, MI Dykman, A Iorio, G Sterling… - Physical Review …, 2023 - APS
We demonstrate a Josephson parametric amplifier design with a band-pass impedance-
matching network based on a third-order Chebyshev prototype. We measured eight …

Low-noise cryogenic microwave amplifier characterization with a calibrated noise source

M Malnou, TFQ Larson, JD Teufel, F Lecocq… - Review of Scientific …, 2024 - pubs.aip.org
Parametric amplifiers have become a workhorse in superconducting quantum computing;
however, research and development of these devices has been hampered by inconsistent …

Simple, High Saturation Power, Quantum-limited, RF SQUID Array-based Josephson Parametric Amplifiers

R Kaufman, C Liu, K Cicak, B Mesits, M **a… - arxiv preprint arxiv …, 2024 - arxiv.org
High-fidelity quantum non-demolition qubit measurement is critical to error correction and
rapid qubit feedback in large-scale quantum computing. High-fidelity readout requires …

Practical Trainable Temporal Postprocessor for Multistate Quantum Measurement

SA Khan, R Kaufman, B Mesits, M Hatridge, HE Türeci - PRX Quantum, 2024 - APS
We develop and demonstrate a trainable temporal postprocessor (TPP) harnessing a simple
but versatile machine learning algorithm to provide optimal processing of quantum …

Directional Josephson traveling-wave parametric amplifier via non-Hermitian topology

T Ramos, Á Gómez-León, JJ García-Ripoll… - arxiv preprint arxiv …, 2022 - arxiv.org
Low-noise microwave amplifiers are crucial for detecting weak signals in quantum
technologies and radio astronomy. Building an ideal device is challenging as it must amplify …

A Linear Quantum Coupler for Clean Bosonic Control

A Maiti, JWO Garmon, Y Lu, A Miano, L Frunzio… - arxiv preprint arxiv …, 2025 - arxiv.org
Quantum computing with superconducting circuits relies on high-fidelity driven nonlinear
processes. An ideal quantum nonlinearity would selectively activate desired coherent …

[HTML][HTML] In-operando microwave scattering-parameter calibrated measurement of a Josephson traveling wave parametric amplifier

SH Shin, M Stanley, WN Wong, T Sweetnam… - Applied Physics …, 2024 - pubs.aip.org
Superconducting traveling wave parametric amplifiers (TWPAs) are broadband near-
quantum limited microwave amplifiers commonly used for qubit readout and a wide range of …

Integrated Circuits for Quantum Machine Learning Based on Superconducting Artificial Atoms and Methods of Their Control

AE Tolstobrov, SV Kadyrmetov, GP Fedorov… - Radiophysics and …, 2024 - Springer
This paper is devoted to the use of quantum integrated circuits based on superconducting
artificial atoms to solve quantum machine learning problems. The process of designing such …

Obstacles to two-line Josephson traveling wave parametric amplifier

VK Kornev, AN Nikolaeva… - IEEE Transactions on …, 2025 - ieeexplore.ieee.org
Obstacles to the two-line Josephson traveling wave parametric amplifier (JTWPA) designs,
aimed at increasing the allowed pump wave energy and, hence, the gain growth through the …

[PDF][PDF] Implementing Surface Codes with Superconducting Circuits

A Remm - 2023 - research-collection.ethz.ch
By utilizing the quantum-mechanical nature of information, quantum computers can execute
algorithms that have no equivalent in classical computing. Most known quantum algorithms …