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IEICE Trans

Masamitsu TANAKA

Demonstration of Low-Power Shift-Register Based on Half-Flux-Quantum Logic
Masamitsu TANAKA Toranosuke NAKAYAMA Shoma TANEMURA Masayuki HIGASHI Feng LI Akira FUJIMAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2025/06/01
Vol. E108-C  No. 6  pp. 335-341
Type of Manuscript:  INVITED PAPER (Special Section on Expanding Superconducting Digital Circuit Applications and Their Design Technology)
Category: 
Keyword: 
energy-efficient circuits, ferromagnetic Josephson junction, π-shifted Josephson junction, superconductor integrated circuit, 
 Summary | Full Text:PDF
Ferromagnetic π Junctions on Niobium Four-Layer Structure for Superconductor Large-Scale Integrated Circuits
Akira FUJIMAKI Daiki HASEGAWA Yuto TAKESHITA Feng LI Taro YAMASHITA Masamitsu TANAKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2025/06/01
Vol. E108-C  No. 6  pp. 348-353
Type of Manuscript:  Special Section PAPER (Special Section on Expanding Superconducting Digital Circuit Applications and Their Design Technology)
Category: 
Keyword: 
π junction, ferromagnetic Josephson junction, half-flux-quantum, 
 Summary | Full Text:PDF
Planarized Nb 4-Layer Fabrication Process for Superconducting Integrated Circuits and Its Fabricated Device Evaluation
Shuichi NAGASAWA Masamitsu TANAKA Naoki TAKEUCHI Yuki YAMANASHI Shigeyuki MIYAJIMA Fumihiro CHINA Taiki YAMAE Koki YAMAZAKI Yuta SOMEI Naonori SEGA Yoshinao MIZUGAKI Hiroaki MYOREN Hirotaka TERAI Mutsuo HIDAKA Nobuyuki YOSHIKAWA Akira FUJIMAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2021/09/01
Vol. E104-C  No. 9  pp. 435-445
Type of Manuscript:  Special Section PAPER (Special Section on Fabrication of Superconductor Devices; Key Technology in Superconductor Electronics)
Category: 
Keyword: 
superconducting fabrication technology, Nb/AlOx/Nb Josephson junction, caldera planarization, multi-layer structure, single-flux quantum logic, adiabatic quantum flux parametron logic, cell-based design, diagnostic shift-registers, 
 Summary | Full Text:PDF
Thermally Assisted Superconductor Transistors for Josephson-CMOS Hybrid Memories
Kyosuke SANO Masato SUZUKI Kohei MARUYAMA Soya TANIGUCHI Masamitsu TANAKA Akira FUJIMAKI Masumi INOUE Nobuyuki YOSHIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2018/05/01
Vol. E101-C  No. 5  pp. 370-377
Type of Manuscript:  INVITED PAPER (Special Section on Innovative Superconducting Devices Based on New Physical Phenomena)
Category: 
Keyword: 
nanodevices, thermally assisted device, single-flux-quantum logic, superconducting integrated circuits, 
 Summary | Full Text:PDF
Towards Ultra-High-Speed Cryogenic Single-Flux-Quantum Computing
Koki ISHIDA Masamitsu TANAKA Takatsugu ONO Koji INOUE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2018/05/01
Vol. E101-C  No. 5  pp. 359-369
Type of Manuscript:  INVITED PAPER (Special Section on Innovative Superconducting Devices Based on New Physical Phenomena)
Category: 
Keyword: 
single flux quantum (SFQ), cryogenic computing, microprocessor, cache memory, Josephson junction, low-power, high-performance, energy-efficient, 
 Summary | Full Text:PDF
Energy/Space-Efficient Rapid Single-Flux-Quantum Circuits by Using π-Shifted Josephson Junctions
Tomohiro KAMIYA Masamitsu TANAKA Kyosuke SANO Akira FUJIMAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2018/05/01
Vol. E101-C  No. 5  pp. 385-390
Type of Manuscript:  Special Section PAPER (Special Section on Innovative Superconducting Devices Based on New Physical Phenomena)
Category: 
Keyword: 
energy-efficient circuit, π-shifted Josephson junctions, rapid single-flux-quantum, superconducting spintronics, 
 Summary | Full Text:PDF
High-Throughput Rapid Single-Flux-Quantum Circuit Implementations for Exponential and Logarithm Computation Using the Radix-2 Signed-Digit Representation
Masamitsu TANAKA Kazuyoshi TAKAGI Naofumi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/06/01
Vol. E99-C  No. 6  pp. 703-709
Type of Manuscript:  Special Section PAPER (Special Section on Cutting-Edge Technologies of Superconducting Electronics)
Category: 
Keyword: 
digital arithmetic, digit-serial processing, hardware algorithm, rapid single-flux-quantum logic, signed-digit representation, systolic array, 
 Summary | Full Text:PDF
Development of an Advanced Circuit Model for Superconducting Strip Line Detector Arrays
Ali BOZBEY Yuma KITA Kyohei KAMIYA Misaki KOZAKA Masamitsu TANAKA Takekazu ISHIDA Akira FUJIMAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/06/01
Vol. E99-C  No. 6  pp. 676-682
Type of Manuscript:  INVITED PAPER (Special Section on Cutting-Edge Technologies of Superconducting Electronics)
Category: 
Keyword: 
SSLD, kinetic inductance detectors, SFQ, superconductors, neutron detector, 
 Summary | Full Text:PDF
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 process, cell-based design technique, high-end computing, large-scale integration, rapid single-flux-quantum circuits, 
 Summary | Full Text:PDF
High-Speed Operation of 0.25-mV RSFQ Arithmetic Logic Unit Based on 10-kA/cm2 Nb Process Technology
Masamitsu TANAKA Atsushi KITAYAMA Masakazu OKADA Tomohito KOUKETSU Takumi TAKINAMI Masato ITO Akira FUJIMAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/03/01
Vol. E97-C  No. 3  pp. 166-172
Type of Manuscript:  Special Section PAPER (Special Section on Leading-Edge Technology of Superconductor Large-Scale Integrated Circuits)
Category: 
Keyword: 
single-flux-quantum logic, low-power, low-voltage, digital arithmetic, 
 Summary | Full Text:PDF
Layout-Driven Skewed Clock Tree Synthesis for Superconducting SFQ Circuits
Kazuyoshi TAKAGI Yuki ITO Shota TAKESHIMA Masamitsu TANAKA Naofumi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/03/01
Vol. E94-C  No. 3  pp. 288-295
Type of Manuscript:  Special Section PAPER (Special Section on Superconducting Signal Processing Technologies)
Category: 
Keyword: 
single-flux-quantum circuit, design methodology, clock tree synthesis, clock skew, 
 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 circuit, Josephson junction, cell library, adder, 
 Summary | Full Text:PDF
Comparisons of Synchronous-Clocking SFQ Adders
Naofumi TAKAGI Masamitsu TANAKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/04/01
Vol. E93-C  No. 4  pp. 429-434
Type of Manuscript:  INVITED PAPER (Special Section on Frontiers of Superconductive Electronics)
Category: 
Keyword: 
single-flux-quantum (SFQ) circuit, adder, hardware algorithm, 
 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 circuit, computer-aided design, wire router, passive transmission line, 
 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:  INVITED PAPER (Special Section on Recent Progress in Superconductive Digital Electronics)
Category: 
Keyword: 
superconductor, microprocessor, single flux quantum, bit-serial, LSI, 
 Summary | Full Text:PDF