Stacked Josephson junctions in view of macroscopic quantum experiments

Citation
C. Granata et al., Stacked Josephson junctions in view of macroscopic quantum experiments, APPL PHYS L, 79(8), 2001, pp. 1145-1147
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
79
Issue
8
Year of publication
2001
Pages
1145 - 1147
Database
ISI
SICI code
0003-6951(20010820)79:8<1145:SJJIVO>2.0.ZU;2-S
Abstract
We present Nb/AlOx/Nb-Al/AlOx/Nb stacked Josephson junctions which we propo se as three-terminal elements to control the quantum behavior of Josephson complex systems. A bias current can be independently injected in the "top" junction, providing a fine control of the critical current of the "bottom" junction. The reported characterization of the device refers to data in the classical limit including measurements of the switching dynamics between m etastable states of the system at different temperatures and bias condition s. At low temperature, the effective dissipation of the bottom junction rem ains substantially unchanged when different injection currents flow in the top junction. These results are interesting to project new configurations o f macroscopic quantum experiments. (C) 2001 American Institute of Physics.