Analyse
Une jonction Josephson soumise à un champ microonde est un système non linéaire susceptible de manifester divers comportements tels que le régime d’accrochage de fréquences ou le régime chaotique. Sachant que les tensions et courants mis en jeu dans ce système évoluent à des fréquences trop élevées pour être mesurés directement, le but de cet article est de montrer comment ces différents comportements peuvent être mis en évidence expérimentalement.
Abstract
A microwave-driven Josephson junction is a nonlinear system which can to exhibit different behaviours such as the mode-locking and chaos. As the frequencies involved in this system usually are very high, the timedependent voltage and current cannot be directly measured with conventional technics. The goal of this paper is to explain how the different regimes can be experimentally observed.
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Vanneste, C., Chi, C.C. Accrochage de fréquences et apparition du chaos dans une jonction Josephson soumise à un champ microonde. Ann. Telecommun. 42, 274–284 (1987). https://doi.org/10.1007/BF02995246
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DOI: https://doi.org/10.1007/BF02995246
Mots clés
- Jonction Josephson
- Jonction tunnel supraconductrice
- Hyperfréquence
- Chaos
- Système non linéaire
- Caractéristique courant tension
- Oscillation forcée
- Etude expérimentale
- Modélisation
- Verrouillage fréquence