Three-wave mixing traveling-wave parametric amplifier with periodic variation of the circuit parameters
Journal article, 2023

We report on the implementation of a near-quantum-limited, traveling-wave parametric amplifier that uses three-wave mixing (3WM). To favor amplification by 3WM, we use superconducting nonlinear asymmetric inductive element (SNAIL) loops, biased with a dc magnetic flux. In addition, we equip the device with dispersion engineering features to create a stopband at the second harmonic of the pump and suppress the propagation of the higher harmonics that otherwise degrade the amplification. With a chain of 440 SNAILs, the amplifier provides up to 20 dB gain and a 3-dB bandwidth of 1 GHz. The added noise by the amplifier is found to be less than one photon.

thin superconducting films

superconducting circuits

Qantum Computing

parametric amplifier

three-wave mixing

Nanofabrication

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Published in

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 122 Issue 5 art. no 052601

Research Project(s)

Wallenberg Centre for Quantum Technology (WACQT)

Knut and Alice Wallenberg Foundation (KAW 2017.0449, KAW2021.0009, KAW2022.0006), 2018-01-01 -- 2030-03-31.

Categorizing

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance

Nanoscience and Nanotechnology

Materials Science

Subject Categories (SSIF 2011)

Materials Engineering

Electrical Engineering, Electronic Engineering, Information Engineering

Nano Technology

Condensed Matter Physics

Roots

Basic sciences

Infrastructure

Nanofabrication Laboratory

Identifiers

DOI

10.1063/5.0127690

More information

Latest update

1/14/2025