Physics

Nonlinear system

Bandwidth (computing)

Mathematics

Parametric statistics

Statistics

Intermodulation

Engineering

Artificial intelligence

Amplifier

Control (management)

Electronic engineering

Computer science

Quantum mechanics

Control theory (sociology)

Telecommunications

Physical Review Applied

Quantum-limited Josephson parametric amplifiers are a key component in many precision microwave measurement setups, such as for the readout of superconducting qubits in a quantum computer. As qubit setups scale up, these amplifiers must be optimized to handle input signals of ever-larger power. The authors design a quantum-limited parametric amplifier based on an array of superconducting nonlinear asymmetric inductive elements. This ``SNAIL'' is optimized to handle large input signals without sacrificing other desirable characteristics. The method can be extended to improve all forms of parametrically induced mixing in quantum information applications.

Optimizing the Nonlinearity and Dissipation of a SNAIL Parametric Amplifier for Dynamic Range