Single-flux-quantum pump based on a three-junction superconducting quantum interference device
Single-flux-quantum pump based on a three-junction superconducting quantum interference device
复制标题
基于三结超导量子干涉装置的单通量量子泵
DOI：
10.1063/1.1485308
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发表时间：
2002
影响因子：
4
通讯作者：
T. Yamashita
中科院分区：
文献类型：
--
作者：
Y. Mizugaki;Jian Chen;S. Nishikata;K. Sugi;K. Nakajima;T. Yamashita
We demonstrate the operation of a single-flux-quantum (SFQ) pump that is electromagnetically dual to the single-electron pump. The circuit is composed of a three-junction superconducting quantum interference device with three control lines. By applying two phase-shifted rf signals magnetically, the SFQ-pump transfers one SFQ per one cycle of the rf signals even at zero- and negatively-biased condition. The circuit was fabricated using a Nb/AlOx/Nb Josephson junction technology. When we fed rf signals of 4.5 GHz, we observed a Shapiro step crossing the zero-current axis. Periodic dependence of voltage at the zero-biasing state upon dc offset flux was also confirmed.
