Single flux quantum circuits with damping based on dissipative transmission lines
Single flux quantum circuits with damping based on dissipative transmission lines
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基于耗散传输线的带阻尼单通量量子电路
DOI：
10.1088/0953-2048/21/12/125010
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发表时间：
2008
影响因子：
3.6
通讯作者：
A. Zorin
中科院分区：
文献类型：
--
作者：
E. Tolkacheva;D. Balashov;M. Khabipov;A. Zorin
我们提出并演示了一种特殊的具有频率相关阻尼的快速单通量量子（RSFQ）电路的功能。这种阻尼是通过分段开放式RC传输线来分流单个约瑟夫森结来实现的。我们的电路包括一个切换触发器单元和约瑟夫森传输线，将单通量量子脉冲传输到该单元，以及DC/SFQ和SFQ/DC转换器。由于RC线分流器中所需的频率色散确保在低频时足够低的噪声，因此这种电路非常适合与通量/相位约瑟夫森量子比特集成并使其有效控制。
We propose and demonstrate the functioning of a special rapid single flux quantum (RSFQ) circuit with frequency-dependent damping. This damping is achieved by shunting individual Josephson junctions by pieces of open-ended RC transmission lines. Our circuit includes a toggle flip-flop cell and Josephson transmission lines transferring single flux quantum pulses to and from this cell, as well as DC/SFQ and SFQ/DC converters. Due to the desired frequency dispersion in the RC line shunts which ensures sufficiently low noise at low frequencies, such circuits are well suited for integrating with the flux/phase Josephson qubit and enable its efficient control.