Akira Fujimaki

According to our database, Akira Fujimaki authored at least 28 papers between 2004 and 2022.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2022

Design of Variable Bit-Width Arithmetic Unit Using Single Flux Quantum Device.

Iori Ishikawa, Ikki Nagaoka, Ryota Kashima, Koki Ishida, Kosuke Fukumitsu, Keitaro Oka, Masamitsu Tanaka, Satoshi Kawakami, Teruo Tanimoto, Takatsugu Ono, Akira Fujimaki, Koji Inoue

Proceedings of the IEEE International Symposium on Circuits and Systems, 2022

2021

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

IEICE Trans. Electron., 2021

2020

32 GHz 6.5 mW Gate-Level-Pipelined 4-Bit Processor using Superconductor Single-Flux-Quantum Logic.

Koki Ishida, Masamitsu Tanaka, Ikki Nagaoka, Takatsugu Ono, Satoshi Kawakami, Teruo Tanimoto, Akira Fujimaki, Koji Inoue

Proceedings of the IEEE Symposium on VLSI Circuits, 2020

2019

A 48GHz 5.6mW Gate-Level-Pipelined Multiplier Using Single-Flux Quantum Logic.

Ikki Nagaoka, Masamitsu Tanaka, Koji Inoue, Akira Fujimaki

Proceedings of the IEEE International Solid- State Circuits Conference, 2019

2018

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

IEICE Trans. Electron., 2018

Energy/Space-Efficient Rapid Single-Flux-Quantum Circuits by Using <i>π</i>-Shifted Josephson Junctions.

Tomohiro Kamiya, Masamitsu Tanaka, Kyosuke Sano, Akira Fujimaki

IEICE Trans. Electron., 2018

2016

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

IEICE Trans. Electron., 2016

2014

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

IEICE Trans. Electron., 2014

Design and High-Speed Demonstration of Single-Flux-Quantum Bit-Serial Floating-Point Multipliers Using a 10kA/cm² Nb Process.

Xizhu Peng, Yuki Yamanashi, Nobuyuki Yoshikawa, Akira Fujimaki, Naofumi Takagi, Kazuyoshi Takagi, Mutsuo Hidaka

IEICE Trans. Electron., 2014

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

IEICE Trans. Electron., 2014

A Reconfigurable Data-Path Accelerator Based on Single Flux Quantum Circuits.

Hiroshi Kataoka, Hiroaki Honda, Farhad Mehdipour, Nobuyuki Yoshikawa, Akira Fujimaki, Hiroyuki Akaike, Naofumi Takagi, Kazuaki J. Murakami

IEICE Trans. Electron., 2014

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

IEICE Trans. Electron., 2014

2012

Advancement of superconductor digital electronics.

Akira Fujimaki

IEICE Electron. Express, 2012

2011

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

IEICE Trans. Electron., 2011

NbN Josephson Junctions for Single-Flux-Quantum Circuits.

Hiroyuki Akaike, Naoto Naito, Yuki Nagai, Akira Fujimaki

IEICE Trans. Electron., 2011

2010

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

IEICE Trans. Electron., 2010

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

IEICE Trans. Electron., 2010

All MgB₂ Josephson Junctions with Amorphous Boron Barriers.

Naoki Mitamura, Chikaze Maruyama, Hiroyuki Akaike, Akira Fujimaki, Rintaro Ishii, Yoshihiro Niihara, Michio Naito

IEICE Trans. Electron., 2010

Foreword.

Akira Fujimaki

IEICE Trans. Electron., 2010

Mapping scientific applications on a large-scale data-path accelerator implemented by single-flux quantum (SFQ) circuits.

Farhad Mehdipour, Hiroaki Honda, Hiroshi Kataoka, Koji Inoue, Irina Kataeva, Kazuaki J. Murakami, Hiroyuki Akaike, Akira Fujimaki

Proceedings of the Design, Automation and Test in Europe, 2010

2009

Design of fast digit-serial adders using SFQ logic circuits.

Heejoung Park, Yuki Yamanashi, Nobuyuki Yoshikawa, Masamitsu Tanaka, Akira Fujimaki

IEICE Electron. Express, 2009

2008

Proposal of a Desk-Side Supercomputer with Reconfigurable Data-Paths Using Rapid Single-Flux-Quantum Circuits.

Naofumi Takagi, Kazuaki J. Murakami, Akira Fujimaki, Nobuyuki Yoshikawa, Koji Inoue, Hiroaki Honda

IEICE Trans. Electron., 2008

Bit-Serial Single Flux Quantum Microprocessor CORE.

Akira Fujimaki, Masamitsu Tanaka, Takahiro Yamada, Yuki Yamanashi, Heejoung Park, Nobuyuki Yoshikawa

IEICE Trans. Electron., 2008

Direct measurements of propagation delay of single-flux-quantum circuits by time-to-digital converters.

Kazunori Nakamiya, Nobuyuki Yoshikawa, Akira Fujimaki, Hirotaka Terai, Yoshihito Hashimoto

IEICE Electron. Express, 2008

Superconductive Single-Flux-Quantum Circuit/System Technology and 40Gb/s Switch System Demonstration.

Yoshihito Hashimoto, Shuichi Nagasawa, Tetsuro Satoh, Kenji Hinode, Hideo Suzuki, Toshiyuki Miyazaki, Mutsuo Hidaka, Nobuyuki Yoshikawa, Hirotaka Terai, Akira Fujimaki

Proceedings of the 2008 IEEE International Solid-State Circuits Conference, 2008

2006

High-Resolution Analog-to-Digital Converters toward Software-Defined-Radio Receivers.

Akira Fujimaki, Yoshinori Nishido, Akito Sekiya

IEICE Trans. Electron., 2006

2005

Development of Passive Interconnection Technology for SFQ Circuits.

Yoshihito Hashimoto, Shinichi Yorozu, Yoshio Kameda, Akira Fujimaki, Hirotaka Terai, Nobuyuki Yoshikawa

IEICE Trans. Electron., 2005

2004

Superconducting digital electronics.

Hisao Hayakawa, Nobuyuki Yoshikawa, Shinichi Yorozu, Akira Fujimaki

Proc. IEEE, 2004