High-Speed Operation of a Single-Flux-Quantum (SFQ) Cross/Bar Switch up to 35 GHz
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概要
- 論文の詳細を見る
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.
- 2003-04-15
著者
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Fujimaki Akira
Department Of Quantum Engineering Nagoya University
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Yorozu Shinichi
Fundamental Research Laboratories Nec Corporation
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Kameda Yoshio
Fundamental Research Laboratories Nec Corporation
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Terai Hirotaka
Communications Research Laboratory Kansai Advanced Research Center
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Terai Hirotaka
Communications Research Laboratory, Kansai Advanced Research Center, Kobe 651-2492, Japan
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Yorozu Shinichi
Fundamental Research Laboratories, NEC Corporation, Tsukuba 305-8501, Japan
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Kameda Yoshio
Fundamental Research Laboratories, NEC Corporation, Tsukuba 305-8501, Japan
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