Akira FUJIMAKI


NbN Josephson Junctions for Single-Flux-Quantum Circuits
Hiroyuki AKAIKE  Naoto NAITO  Yuki NAGAI  Akira FUJIMAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/03/01
Vol. E94-C  No. 3  pp. 301-306
Type of Manuscript: Special Section PAPER (Special Section on Superconducting Signal Processing Technologies)
Category: 
Keyword: 
NbNJosephson junctionsself-shuntedAlNxradical-nitridation
  Summary |  Full Text:PDF

Proposal of a Compact Neutron Diffraction System with a Single-Flux-Quantum Signal Processor
Akira FUJIMAKI  Isao NAKANISHI  Shigeyuki MIYAJIMA  Kohei ARAI  Yukio AKITA  Takekazu ISHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/03/01
Vol. E94-C  No. 3  pp. 254-259
Type of Manuscript: Special Section PAPER (Special Section on Superconducting Signal Processing Technologies)
Category: INVITED
Keyword: 
neutrondiffractionsingle flux quantumtime-to-digital convertertime-of-flight
  Summary |  Full Text:PDF

FOREWORD
Akira FUJIMAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/04/01
Vol. E93-C  No. 4  pp. 427-428
Type of Manuscript: FOREWORD
Category: 
Keyword: 
  Summary |  Full Text:PDF

Automated Passive-Transmission-Line Routing Tool for Single-Flux-Quantum Circuits Based on A* Algorithm
Masamitsu TANAKA  Koji OBATA  Yuki ITO  Shota TAKESHIMA  Motoki SATO  Kazuyoshi TAKAGI  Naofumi TAKAGI  Hiroyuki AKAIKE  Akira FUJIMAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/04/01
Vol. E93-C  No. 4  pp. 435-439
Type of Manuscript: Special Section PAPER (Special Section on Frontiers of Superconductive Electronics)
Category: Digital Applications
Keyword: 
single-flux-quantum circuitcomputer-aided designwire routerpassive transmission line
  Summary |  Full Text:PDF

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

All MgB2 Josephson Junctions with Amorphous Boron Barriers
Naoki MITAMURA  Chikaze MARUYAMA  Hiroyuki AKAIKE  Akira FUJIMAKI  Rintaro ISHII  Yoshihiro NIIHARA  Michio NAITO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/04/01
Vol. E93-C  No. 4  pp. 468-472
Type of Manuscript: Special Section PAPER (Special Section on Frontiers of Superconductive Electronics)
Category: Junctions
Keyword: 
MgB2Josephson junctionamorphous boron
  Summary |  Full Text:PDF

Proposal of a Desk-Side Supercomputer with Reconfigurable Data-Paths Using Rapid Single-Flux-Quantum Circuits
Naofumi TAKAGI  Kazuaki MURAKAMI  Akira FUJIMAKI  Nobuyuki YOSHIKAWA  Koji INOUE  Hiroaki HONDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/03/01
Vol. E91-C  No. 3  pp. 350-355
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Superconductive Digital Electronics)
Category: INVITED
Keyword: 
superconductorrapid single-flux-quantum circuitreconfigurable data-pathhigh-performance computingsupercomputer
  Summary |  Full Text:PDF

Bit-Serial Single Flux Quantum Microprocessor CORE
Akira FUJIMAKI  Masamitsu TANAKA  Takahiro YAMADA  Yuki YAMANASHI  Heejoung PARK  Nobuyuki YOSHIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/03/01
Vol. E91-C  No. 3  pp. 342-349
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Superconductive Digital Electronics)
Category: INVITED
Keyword: 
superconductormicroprocessorsingle flux quantumbit-serialLSI
  Summary |  Full Text:PDF

High-Resolution Analog-to-Digital Converters toward Software-Defined-Radio Receivers
Akira FUJIMAKI  Yoshinori NISHIDO  Akito SEKIYA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/02/01
Vol. E89-C  No. 2  pp. 113-118
Type of Manuscript: Special Section PAPER (Special Section on Superconducting High-frequency Devices)
Category: INVITED
Keyword: 
analog-to-digital convertersuperconductorsoftware-defined-radiosingle-flux-quantum
  Summary |  Full Text:PDF

Development of Passive Interconnection Technology for SFQ Circuits
Yoshihito HASHIMOTO  Shinichi YOROZU  Yoshio KAMEDA  Akira FUJIMAKI  Hirotaka TERAI  Nobuyuki YOSHIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/02/01
Vol. E88-C  No. 2  pp. 198-207
Type of Manuscript: Special Section PAPER (Special Section on Superconducting Electronic Devices and Their Applications)
Category: INVITED
Keyword: 
SFQintegrated circuitinterconnectionsuperconductorpassive transmission line
  Summary |  Full Text:PDF

High-End Server Based on Complexity-Reduced Architecture for Superconductor Technology
Akira FUJIMAKI  Yoshiaki TAKAI  Nobuyuki YOSHIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 612-616
Type of Manuscript: INVITED PAPER (Special Issue on Superconductive Electronics)
Category: Digital Devices and Their Applications
Keyword: 
SFQmemoryprocessorsuperconducting circuitJAVA
  Summary |  Full Text:PDF

Design and Demonstration of Pipelined Circuits Using SFQ Logic
Akira AKAHORI  Akito SEKIYA  Takahiro YAMADA  Akira FUJIMAKI  Hisao HAYAKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 641-644
Type of Manuscript: Special Section PAPER (Special Issue on Superconductive Electronics)
Category: Digital Devices and Their Applications
Keyword: 
SFQpipeline architectureparameter spreadleakage currentparameter optimization method
  Summary |  Full Text:PDF

Bit Error Rate Measurement of a Measuring System Designed for Superconducting Digital Circuits
Kazuhiro SHIMAOKA  Seiichi TOKUNAGA  Masaaki NEMOTO  Isao YOSHIDA  Akira FUJIMAKI  Hisao HAYAKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/01/01
Vol. E84-C  No. 1  pp. 29-34
Type of Manuscript: Special Section PAPER (Special Issue on Superconductive Electronics)
Category: Digital Applications
Keyword: 
bit error rate (BER)cryo-coolervector network measurementsuperconductormagnetic shield
  Summary |  Full Text:PDF

Ramp-Edge Josephson Junctions Using Barriers of Various Resistivities
Masahiro HORIBE  Koh-ichi KAWAI  Akira FUJIMAKI  Hisao HAYAKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/10/20
Vol. E81-C  No. 10  pp. 1526-1531
Type of Manuscript: INVITED PAPER (Special Issue on Low- and High-Temperature Superconductive Electron Devices and Their Applications)
Category: High-Tc Junction Technology
Keyword: 
ramp-edge Josephson junctionGa dopingCa dopingdirect tunnelingresonant tunneling
  Summary |  Full Text:PDF

Vortex Flow Transistors Based on YBa2Cu3O7δ Films
Akira FUJIMAKI  Masanobu KUSUNOKI  Masaru KITO  Syuji YOSHIDA  Hiroya ANDOH  Hisao HAYAKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/09/20
Vol. E79-C  No. 9  pp. 1247-1253
Type of Manuscript: INVITED PAPER (Special Issue on Toward Digital and Analog Applications of Superconductors)
Category: Device technology
Keyword: 
vortex flow transistorAbrikosov vortexnanobridgehigh-temperature superconductor
  Summary |  Full Text:PDF