The paper investigates the interplay of nonlinear effects with the non-ideal transmission properties of a Josephson Travelling Wave Parametric Amplifier (JTWPA). Experimental characterization using a microwave and DC cryogenic setup reveals periodic transmission modulation linked to the tuning of the Josephson inductances embedded in the line. The effects of impedance matching and resonant parametric down-conversion (PDC) are observed on a broadband scale, and the impact of de sign parameters and fabrication issues on device performance is analyzed. These findings contribute to the optimizing techniques for JTWPA devices, advancing quantum-limited amplifiers.

Internal reflections and nonlinear effects interplay in non-ideal Josephson Travelling Wave Parametric Amplifiers / Fasolo, L.; Oberto, L.; Callegaro, L.; Enrico, E.. - (2023). (Intervento presentato al convegno The International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits - INMMIC 2023 tenutosi a Aveiro, Portugal nel 8-10 Novembre 2023).

Internal reflections and nonlinear effects interplay in non-ideal Josephson Travelling Wave Parametric Amplifiers

L. Fasolo;L. Oberto;L. Callegaro;E. Enrico
2023

Abstract

The paper investigates the interplay of nonlinear effects with the non-ideal transmission properties of a Josephson Travelling Wave Parametric Amplifier (JTWPA). Experimental characterization using a microwave and DC cryogenic setup reveals periodic transmission modulation linked to the tuning of the Josephson inductances embedded in the line. The effects of impedance matching and resonant parametric down-conversion (PDC) are observed on a broadband scale, and the impact of de sign parameters and fabrication issues on device performance is analyzed. These findings contribute to the optimizing techniques for JTWPA devices, advancing quantum-limited amplifiers.
2023
The International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits - INMMIC 2023
8-10 Novembre 2023
Aveiro, Portugal
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/78188
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