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.

引用

页码：1 / 4

页数：4

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