Measurements for an experiment of macroscopic quantum coherence with SQUIDs

被引：3
|
作者：
Cosmelli, C [1 ]
Carelli, P
Castellano, MG
Chiarello, F
Leoni, R
Torrioli, G
机构：
[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[2] Ist Nazl Fis Nucl, I-00185 Rome, Italy
[3] Univ Aquila, Dipartimento Ingn Elettr, I-67040 Laquila, Italy
[4] CNR, Ist Elettron Stato Solido, I-00156 Rome, Italy
[5] Ist Nazl Fis Mat, I-67040 Laquila, Italy
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 372卷
关键词：
macroscopic quantum coherence; SQUIDs; non-invasive measurements;
D O I：
10.1016/S0921-4534(02)00673-1
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have realized a fully integrated chip containing all the different devices (realized with trilayer Nb/AlOx/Nb technology) necessary to perform the MQC measurements. On the chip we have a double rf-SQUID inductively coupled to two different dc-SQUIDs: a standard dc-SQUID amplifier to monitor the state of the rf-SQUID, and an underdamped dc-SQUID, operating as a two-state system, to perform stroboscopic measurements of the rf-SQUID flux states. On this system we have realized a set of measurements to characterize the different devices at temperatures of the order of tens of mK. We have also performed the first measurements with the dc-SQUID amplifier and with the dc-SQUID switch, making stroboscopic measurements on the rf-SQUID. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：213 / 216
页数：4
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