Optimizing the Nonlinearity and Dissipation of a SNAIL Parametric Amplifier for Dynamic Range
By N. Frattini, V. Sivak, A. Lingenfelter, S. Shankar, Michel H. Devoret. Physical Review Applied, 2018
138 citations recorded by the source corpus.
We present a new quantum-limited Josephson-junction-based 3-wave-mixing parametric amplifier, the SNAIL Parametric Amplifier (SPA), which uses an array of SNAILs (Superconducting Nonlinear Asymmetric Inductive eLements) as the source of tunable nonlinearity. We show how to engineer the nonlinearity over multiple orders of magnitude by varying the physical design of the device. As a function of design parameters, we systematically explore two important amplifier nonidealities that limit dynamic range: the phenomena of gain compression and intermodulation distortion, whose minimization are crucial for high-fidelity multi-qubit readout. Through a comparison with first-principles theory across multiple devices, we demonstrate how to optimize both the nonlinearity and the input-output port coupling of these SNAIL-based parametric amplifiers to achieve higher saturation power, without sacrificing any other desirable characteristics. The method elaborated in our work can be extended to improve all forms of parametrically induced mixing that can be employed for quantum information applications.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/a6d92a3c08de9e07b053b4b8afe07979f526092e
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In Artificial Intelligence
- Steven M. Girvin
- Robert J. Schoelkopf
- Michel H. Devoret
- Göran Wendin
- V. Sivak
- Franco Nori
- Alexandre Blais
- Andreas Wallraff
In Atomic and Molecular Physics, and Optics
- Steven M. Girvin
- Robert J. Schoelkopf
- Michel H. Devoret
- Göran Wendin
- V. Sivak
- Franco Nori
- Alexandre Blais
- Andreas Wallraff
In Condensed Matter Physics
Citations in the corpus
- Fast universal control of an oscillator with weak dispersive coupling to a qubit (2021, methodology): “Single-shot readout is performed using a SNAIL parametric amplifier operating with 20 dB of gain in phasepreserving mode [65].”