High-Speed Operation of a Single-Flux-Quantum (SFQ) Cross/Bar Switch up to 35 GHz
High-Speed Operation of a Single-Flux-Quantum (SFQ) Cross/Bar Switch up to 35 GHz
复制标题
单通量量子 (SFQ) 交叉/条开关的高速运行高达 35 GHz
DOI：
10.1143/jjap.42.2163
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发表时间：
2003
影响因子：
1.5
通讯作者：
A. Fujimaki
中科院分区：
文献类型：
--
作者：
Y. Kameda;S. Yorozu;H. Terai;A. Fujimaki
单通量量子（SFQ）技术是一种新颖的技术，其中二进制信息由单通量表示。它使我们能够实现高速，低功耗SFQ逻辑电路，超越传统的互补金属氧化物硅（CMOS）技术。我们提出了SFQ分组交换，以避免未来的宽带网络的瓶颈。为了演示SFQ逻辑电路的高速操作及其在我们的开关架构中的应用，我们设计了一个交叉/交叉开关。它由13个逻辑门和581个约瑟夫森结组成。我们在仿真中确认了高达33 GHz的正确操作。我们将开关电路放置在片上测试系统中进行高速（超过10 GHz）测试。包括I/O电路在内，整个系统由1236个约瑟夫森结组成。该芯片采用NEC的标准Nb工艺制造。我们进行了片上测试，发现在高达35 GHz的频率下工作正常。
Single-flux-quantum (SFQ) technology is a novel technology where binary information is represented by a single flux. It enables us to realize high-speed, low-power SFQ logic circuits, surpassing conventional complementary metal-oxide-silicon (CMOS) technology. We proposed an SFQ packet switch to avoid the bottlenecks in broadband networks of the future. To demonstrate high-speed operation of an SFQ logic circuit and its application to our switch architecture, we designed a cross/bar switch. It consists of 13 logic gates and 581 Josephson junctions were used in the layout. We confirmed correct operations up to 33 GHz in simulation. We placed the switch circuit in an on-chip test system for high-speed (over 10 GHz) test. Including I/O circuits, the system as a whole consists of 1236 Josephson junctions. The chip was fabricated by using NEC's standard Nb process. We carried out an on-chip test and found correct operations up to 35 GHz.