We demonstrate a Josephson parametric amplifier design with a band-pass impedance-
matching network based on a third-order Chebyshev prototype. We measured eight …

Superconducting parametric amplifiers play a crucial role in the preparation and readout of
quantum states at microwave frequencies, enabling high-fidelity measurements of …

The most commonly used physical realization of superconducting qubits for quantum circuits
is a transmon. There are a number of superconducting quantum circuits applications, where …

Josephson superconducting qubits and parametric amplifiers are prominent examples of
superconducting quantum circuits that have shown rapid progress in recent years. As such …

Abstract Reproducibility of Al/AlOx/Al Josephson junctions is a challenge for scaling up
superconducting quantum processors. The frequency uncertainty of the transmon qubits …

Quantum processors using superconducting qubits suffer from dielectric loss leading to
noise and dissipation. Qubits are usually designed as large capacitor pads connected to a …

Electromagnetic noise is one of the main external factors decreasing superconducting qubit
coherence. Matched coaxial filters can prevent microwave and IR photons' negative …

Parametric resonance, with its remarkable signal amplification capabilities, holds great
potential in areas such as sensing, warning detection, and energy harvesting. However, its …

Quantum-limited Josephson parametric amplifiers play a pivotal role in advancing the field
of circuit quantum electrodynamics by enabling the fast and high-fidelity measurement of …

This work proposes a graphical impedance-matching method for superconducting
parametric amplifiers with quantum-limited noise performance using a modified Smith chart …