约瑟夫森结跳变电流统计分布测量系统
Tien Tzu Hsueh Pao/Acta Electronica Sinica(2007)
Abstract
本文详细介绍了一种通过对时间的测量来获得单个约瑟夫森结(JJ)跳变电流统计分布P(I)的测量系统,包括致冷系统和测量方案.我们还在测量电路中采取了电磁屏蔽、低通滤波、接地等一系列的降噪措施,使得实验所能测量到的约瑟夫森结的最低等效温度进一步的降低至300mK.
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Key words
Josephson junction,Noise reduction,Superconducting qubit,Superconductor
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