Shuichi NAGASAWA


Large-Scale Integrated Circuit Design Based on a Nb Nine-Layer Structure for Reconfigurable Data-Path Processors
Akira FUJIMAKI Masamitsu TANAKA Ryo KASAGI Katsumi TAKAGI Masakazu OKADA Yuhi HAYAKAWA Kensuke TAKATA Hiroyuki AKAIKE Nobuyuki YOSHIKAWA Shuichi NAGASAWA Kazuyoshi TAKAGI Naofumi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/03/01
Vol. E97-C  No. 3  pp. 157-165
Type of Manuscript:  INVITED PAPER (Special Section on Leading-Edge Technology of Superconductor Large-Scale Integrated Circuits)
Category: 
Keyword: 
advanced processcell-based design techniquehigh-end computinglarge-scale integrationrapid single-flux-quantum circuits
 Summary | Full Text:PDF(2.3MB)

Nb 9-Layer Fabrication Process for Superconducting Large-Scale SFQ Circuits and Its Process Evaluation
Shuichi NAGASAWA Kenji HINODE Tetsuro SATOH Mutsuo HIDAKA Hiroyuki AKAIKE Akira FUJIMAKI Nobuyuki YOSHIKAWA Kazuyoshi TAKAGI Naofumi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/03/01
Vol. E97-C  No. 3  pp. 132-140
Type of Manuscript:  INVITED PAPER (Special Section on Leading-Edge Technology of Superconductor Large-Scale Integrated Circuits)
Category: 
Keyword: 
superconducting fabrication technologyNb/AlOx/Nb Josephson junctionsingle flux quantumplanarizationshift register
 Summary | Full Text:PDF(5.3MB)

100 GHz Demonstrations Based on the Single-Flux-Quantum Cell Library for the 10 kA/cm2 Nb Multi-Layer Process
Yuki YAMANASHI Toshiki KAINUMA Nobuyuki YOSHIKAWA Irina KATAEVA Hiroyuki AKAIKE Akira FUJIMAKI Masamitsu TANAKA Naofumi TAKAGI Shuichi NAGASAWA Mutsuo HIDAKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/04/01
Vol. E93-C  No. 4  pp. 440-444
Type of Manuscript:  Special Section PAPER (Special Section on Frontiers of Superconductive Electronics)
Category: Digital Applications
Keyword: 
single flux quantum circuitJosephson junctioncell libraryadder
 Summary | Full Text:PDF(668.8KB)

Improvements in Fabrication Process for Nb-Based Single Flux Quantum Circuits in Japan
Mutsuo HIDAKA Shuichi NAGASAWA Kenji HINODE Tetsuro SATOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/03/01
Vol. E91-C  No. 3  pp. 318-324
Type of Manuscript:  INVITED PAPER (Special Section on Recent Progress in Superconductive Digital Electronics)
Category: 
Keyword: 
superconductive circuitJosephson junctionfabrication processSFQ (Single Flux Quantum) circuitNb/AlOx/Nb junction
 Summary | Full Text:PDF(2.2MB)

Pattern-Size-Free Planarization for Multilayered Large-Scale SFQ Circuits
Kenji HINODE Shuichi NAGASAWA Masao SUGITA Tetsuro SATOH Hiroyuki AKAIKE Yoshihiro KITAGAWA Mutsuo HIDAKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/12/01
Vol. E86-C  No. 12  pp. 2511-2513
Type of Manuscript:  LETTER
Category: Superconductive Electronics
Keyword: 
planarizationreversal maskNb SFQmultilevel wiring
 Summary | Full Text:PDF(496.4KB)

Single Flux Quantum Multistage Decimation Filters
Haruhiro HASEGAWA Tatsunori HASHIMOTO Shuichi NAGASAWA Satoru HIRANO Kazunori MIYAHARA Youichi ENOMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/01/01
Vol. E86-C  No. 1  pp. 2-8
Type of Manuscript:  INVITED PAPER (Special Issue on Superconductor Digital/Analog Circuit Technologies)
Category: LTS Digital Applications
Keyword: 
single flux quantumsinc filterdecimation filterJosephson junction
 Summary | Full Text:PDF(1.8MB)

Design of SFQ Circuits and Their Measurement
Kazunori MIYAHARA Shuichi NAGASAWA Haruhiro HASEGAWA Tatsunori HASHIMOTO Hideo SUZUKI Youichi ENOMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 603-607
Type of Manuscript:  INVITED PAPER (Special Issue on Superconductive Electronics)
Category: Digital Devices and Their Applications
Keyword: 
AD converterdecimation filtersuperconducting memorySFQ circuitsigma-delta modulator
 Summary | Full Text:PDF(1017KB)

Superconducting Technology for Digital Applications Using Niobium Josephson Junctions
Shuichi TAHARA Hideaki NUMATA Shinichi YOROZU Yoshihito HASHIMOTO Shuichi NAGASAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/01/25
Vol. E83-C  No. 1  pp. 60-68
Type of Manuscript:  INVITED PAPER (Special Issue on Superconductive Devices and Systems)
Category: Digital Applications
Keyword: 
Josephson junctionsplanarizationmoat structurememorynetwork
 Summary | Full Text:PDF(3.4MB)

Josephson Memory Technology
Suichi TAHARA Shuichi NAGASAWA Hideaki NUMATA Yoshihito HASHIMOTO Shinichi YOROZU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/09/25
Vol. E79-C  No. 9  pp. 1193-1199
Type of Manuscript:  INVITED PAPER (Special Issue on Toward Digital and Analog Applications of Superconductors)
Category: Superconductive digital integrated circuits
Keyword: 
Josephsonmemoryflux trapbuilt-in self testing
 Summary | Full Text:PDF(700.6KB)

A Resistor Coupled Josephson Polarity-Convertible Driver
Shuichi NAGASAWA Shuichi TAHARA Hideaki NUMATA Yoshihito HASHIMOTO Sanae TSUCHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1994/08/25
Vol. E77-C  No. 8  pp. 1176-1180
Type of Manuscript:  Special Section PAPER (Special Section on Superconducting Devices)
Category: LTS
Keyword: 
superconductive electronicsJosephson devicedriverlow temperature device
 Summary | Full Text:PDF(490KB)