Authors: Nicholas M. Hougland, Zhuan Li, Ryan Kaufman, Boris Mesits, Roger S. K. Mong, Michael Hatridge, David Pekker

Published on: February 19, 2024

Impact Score: 7.8

Arxiv code: Arxiv:2402.12586

Summary

• What is new: Investigation of upper bounds on power added efficiency (PAE) for parametric amplifiers and new circuit designs offering significant improvements in PAE.
• Why this is important: Existing Josephson parametric amplifiers (JPA) have low power added efficiency, leading to high heat loads in cryostats and limiting the number of devices that can be hosted.
• What the research proposes: Numerical investigation of PAE bounds for a specific class of parametric amplifiers, proposing two new circuit designs and the concept of chaining polynomial amplifiers.
• Results: Significantly improved PAE in proposed designs, with up to 95% for chained amplifiers, compared to ~0.1% for typical JPAs.

Technical Details

Technological frameworks used: Numerical investigation and theoretical modeling

Models used: Nonlinear blocks described by arbitrary polynomial current-phase relation, chained polynomial amplifiers

Data used: Parameters from existing Josephson parametric amplifiers

Potential Impact

Quantum computing infrastructure providers, cryogenic equipment manufacturers, companies involved in quantum information processing

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