Quantum behavior of underdamped Josephson devices

被引：3
|
作者：
Corato, V [1 ]
Rombetto, S
Granata, C
Esposito, E
Longobardi, L
Russo, M
Russo, R
Ruggiero, B
Silvestrini, P
机构：
[1] Univ Naples 2, Dipartimento Ingn Informaz, I-81031 Aversa, Italy
[2] CNR, Ist Cibernet E Caianiello, I-80078 Pozzuoli, Italy
[3] INFM, I-81031 Aversa, Italy
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.70.172502
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present an experimental characterization of Nb/AlOx/Nb Josephson devices in the quantum regime. Josephson junctions and fully integrated Josephson devices consisting of an rf SQUID coupled to a read-out system based on a dc SQUID have been measured. Data on the decay rates from the metastable states show evidence of macroscopic quantum tunneling with a very low dissipation level and a high isolation of the devices from the external environment.
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页码：1 / 4
页数：4
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