Josephson mixers for terahertz detection
Maxime Malnou, Cheryl Feuillet-Palma, Christian Ulysse, Giancarlo, Faini, Pascal Febvre, Martin Sirena, Ludovic Olanier, Jerome Lesueur and, Nicolas Bergeal
TL;DR
This paper investigates the high-frequency mixing capabilities of ion-irradiated YBa2Cu3O7 Josephson junctions in the terahertz range, combining experimental measurements with theoretical modeling to optimize device performance.
Contribution
It provides a comprehensive experimental and theoretical analysis of Josephson junction mixers for terahertz detection, demonstrating good agreement with the three-port model across various frequencies.
Findings
High conversion efficiency achieved in terahertz range
Performance depends on local oscillator power and frequency
Theoretical model accurately predicts experimental results
Abstract
We report on an experimental and theoretical study of the high-frequency mixing properties of ion-irradiated YBa2Cu3O7 Josephson junctions embedded in THz antennas. We investigated the influence of the local oscillator power and frequency on the device performances. The experimental data are compared with theoretical predictions of the general three-port model for mixers, in which the junction is described by the resistively shunted junction model. A good agreement is obtained for the conversion efficiency in different frequency ranges, spanning above and below the characteristic frequencies fc of the junctions.
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Superconducting and THz Device Technology · Terahertz technology and applications