论文标题
用于设计和分析约瑟夫森连接电路的磁性频率图表
Magnetic-Flux-Flow Diagrams for Design and Analysis of Josephson Junction Circuits
论文作者
论文摘要
约瑟夫森连接电路（例如超导量子干扰设备（鱿鱼）和单频量子 - 量子（SFQ）电路）已在模拟和数字系统中应用于其超高噪声，高速和功率效率的特征。但是，由于约瑟夫森效应和通量量化现象，传统电路图和基于电荷的分析方法并不能很好地支持它们的分析。本文介绍了一种用于设计和分析约瑟夫森连接电路的磁性频率 - 流量（MFF）图。约瑟夫森连接电路的MFF图是电路方程的图形表达式。它不仅给出了约瑟夫森连接和超导循环的行为新的物理含义，而且还可以想象如何在超导循环中转移通量量子。 MFF图的优势在典型的Josephson插口电路的设计和分析中得到了证明。结果表明，MFF图和基于通量的分析方法是约瑟夫森连接电路的常规电路方法必不可少的补充。
Josephson junction circuits, such as superconducting quantum interference devices (SQUIDs) and single-flux-quantum (SFQ) circuits, have been applied in both analog and digital systems for their ultralow-noise, high-speed, and power-efficient features. However, their analyses are not well supported by the conventional circuit diagrams and the charge-based analysis methods, due to the Josephson effects and flux quantization phenomena. This article introduces a type of magnetic-flux-flow (MFF) diagrams for the design and analysis of Josephson junction circuits. The MFF diagram of a Josephson junction circuit is the graphical expression of circuit equations. It not only gives the behaviors of Josephson junctions and superconducting loops new physical meanings, but also visualizes how the flux quanta are transferred among superconducting loops. The advantages of MFF diagrams are demonstrated in the design and analysis of typical Josephson junction circuits. It is shown that the MFF diagram and flux-based analysis method are the indispensable complement to the conventional circuit methodologies for Josephson junction circuits.
