Faculty Profiles - TANAKA, Masamitsu

Presentations -

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超伝導量子ビットのデジタル制御に向けた極低消費電力超伝導集積回路 Invited

田中雅光

2024年電子情報通信学会総合大会

量子ビット制御に向けた250 A/cm2プロセスによる低消費電力単一磁束量子スタンダードセルの開発

田中雅光, 北川佳廣, 佐藤哲朗, 山本剛

第72回応用物理学会春季学術講演会

異なる0-0-π SQUIDで構成した半磁束量子回路の動特性評価

稲垣賢信, 出口創万, 佐藤太一, 堀裕貴, 西崎海, 李峰, 田中雅光, 藤巻朗

第72回応用物理学会春季学術講演会

半磁束量子回路の論理ゲートの静的消費電力の評価

出口創万, 稲垣賢信, 佐藤太一, 堀裕貴, 西崎海, 李峰, 田中雅光, 藤巻朗

第72回応用物理学会春季学術講演会

インパルス駆動型メモリの高速読み出し化に向けた多入力OR回路

佐藤太一, 李峰, 田中雅光, 藤巻朗

第72回応用物理学会春季学術講演会

π接合を用いた強い結合強度を持つ超伝導磁束量子ビット間結合器の特性評価

堀裕貴, 西崎海, 李峰, 田中雅光, 藤巻朗

第72回応用物理学会春季学術講演会

強磁性ジョセフソン接合を用いた人工スピン素子による低消費電力超伝導集積回路 Invited

田中雅光

第28回半導体におけるスピン工学の基礎と応用

Highly energy-efficient processing by controlling flexibility of information carrier using superconductor half-flux quantum logic Invited International conference

Masamitsu Tanaka

30th Asia and South Pacific Design Automation Conference (ASP-DAC 2025)

量子計算周辺回路としての超伝導集積回路技術 Invited

田中雅光

応用物理学会超集積エレクトロニクス産学連携委員会第11回研究会

Evaluation of cascade connection of flux transfer circuits using a π-junction toward quantum annealer application International conference

Kai Nishizaki, Hiroki Hori, Feng Li, Masamitsu Tanaka, Akira Fujimaki

37th International Symposium on Superconductivity (ISS 2024)

Design of traveling-wave parametric amplifier with consideration of manufacturing yield improvement International conference

Daisuke Saida, Shoichi Suda, Kenjiro Hayashi, Yoshiyasu Doi, Shintaro Sato, Kazumasa Makise, Hongxiang Shen, Yuki Yamanashi, Masamitsu Tanaka

37th International Symposium on Superconductivity (ISS 2024)

Flux-bias-free flux qubit driven by low-Jc SFQ driver on monolithically integrated circuit International conference

Duong Pham, Tomoharu Ueda, Shigeyuki Miyajima, Hirotaka Terai, Kunihiro Inomata, Masamitsu Tanaka, Akira Fujimaki, Taro Yamashita

3rd International Workshop of Spin/Quantum Materials and Devices (IWSQMD2024) & 6th Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC2024)

Josephson junction based on ferromagnetic semiconductor interlayer for future superconducting spintronics International coauthorship International conference

Feng Li, William Freeman Holmes-Hewett, Jackson Miller, Simon Granville, Ben Ruck, Masamitsu Tanaka, Akira Fujimaki

17th Superconducting SFQ VLSI Workshop (SSV 2024)

Design of low-power single flux quantum circuits using giant inductance of π-SQUIDs International conference

Hinako Mori, Feng Li, Masamitsu Tanaka, Akira Fujimaki

17th Superconducting SFQ VLSI Workshop (SSV 2024)

Design of logic gates of half-flux quantum circuits International conference

Soma Deguchi, Kai Nishizaki, Taichi Sato, Hiroki Hori, Feng Li, Masamitsu Tanaka, Akira Fujimaki

17th Superconducting SFQ VLSI Workshop (SSV 2024)

0-0-π SQUIDの周回電流の向きが半磁束量子論理ゲートに及ぼす影響

出口創万, 佐藤太一, 堀裕貴, 西崎海, 李峰, 田中雅光, 藤巻朗

第85回応用物理学会秋季学術講演会

インパルス駆動型メモリにおけるセル選択用パルスの光速伝搬実証

佐藤太一, 李峰, 田中雅光, 藤巻朗

第85回応用物理学会秋季学術講演会

π接合を用いた多段接続磁束伝送回路の評価

堀裕貴, 佐藤太一, 李峰, 田中雅光, 藤巻朗

第85回応用物理学会秋季学術講演会

単一磁束量子回路によるFIFO同期器の高速化

樋脇晃祐, 田中雅光, 李峰, 藤巻朗

2024年電子情報通信学会ソサイエティ大会

Superconductor integrated circuit design: Let's start it today Invited International conference

Masamitsu Tanaka

QUEST 2024 Technical Program

Designing high-efficiency superconducting diodes with enhanced forward supercurrents International conference

Feng Li, Taichi Sato, Masamitsu Tanaka, Akira Fujimaki

2024 Applied Superconductivity Conference (ASC2024)

Low-power single-flux-quantum standard cell library using 250 A/cm2 process for qubit control applications International conference

Masamitsu Tanaka, Yoshihiro Kitagawa, Tetsuro Sato, Tsuyoshi Yamamoto

2024 Applied Superconductivity Conference (ASC2024)

Reduction of footprint of an impulse-driven memory cell by introduction of directly coupled signal lines International conference

Taichi Sato, Masayuki Higashi, Feng Li, Masamitsu Tanaka, Akira Fujimaki

2024 Applied Superconductivity Conference (ASC2024)

Demonstration of flexible design of low-power circuits using half-flux quantum logic International conference

Masamitsu Tanaka, Toranosuke Nakayama, Shoma Tanemura, Masayuki Higashi, Soma Deguchi, Feng Li, Akira Fujimaki, Yuki Matsumoto, Takatsugu Ono

2024 Applied Superconductivity Conference (ASC2024)

Breaking the conventional limit of transfer coefficients in flux transfer circuits utilizing energy stored inherently in a π-junction International conference

Akira Fujimaki, Masayuki Higashi, Hiroki Hori, Kai Nishizaki, Feng Li, Masamitsu Tanaka

2024 Applied Superconductivity Conference (ASC2024)

Circuit applications of the negative inductance of a π-junction International conference

Hiroki Hori, Masayuki Higashi, Kai Nishizaki, Feng Li, Masamitsu Tanaka, Akira Fujimaki

2024 Applied Superconductivity Conference (ASC2024)

Monolithic quantum circuits with flux-bias-free flux qubit and low-Jc single-flux-quantum driver circuit International conference

Duong Pham, Tomoharu Ueda, Shigeyuki Miyajima, Hirotaka Terai, Kunihiro Inomata, Masamitsu Tanaka, Akira Fujimaki, Taro Yamashita

2024 Applied Superconductivity Conference (ASC2024)

低消費電力半磁束量子回路における位相の挙動解析と動作マージン拡大

出口創万, 佐藤太一, 堀裕貴, 西崎海, 李峰, 田中雅光, 藤巻朗

超伝導エレクトロニクス研究会

機械式冷凍機を用いた測定環境における雑音評価

田中雅光, 李峰, 藤巻朗

第107回低温工学・超電導学会研究発表会

量子ビット制御に向けた250 A/cm2プロセスによる低消費電力単一磁束量子回路の動作速度評価

田中雅光, 北川佳廣, 佐藤哲朗, 山本剛

第71回応用物理学会春季学術講演会 2024.3.22

Superconducting diode based on asymmetric 3-JJs SQUID

第71回応用物理学会春季学術講演会 2024.3.24

πシフトジョセフソン接合を用いた単一磁束量子非破壊読み出しフリップフロップの動作実証

出口創万, 上田伴春, 李峰, 田中雅光, 藤巻朗

第71回応用物理学会春季学術講演会 2024.3.24

信号線の直接注入を用いたインパルス駆動型メモリセルの設計

佐藤太一, 東正志, 李峰, 田中雅光, 藤巻朗

第71回応用物理学会春季学術講演会 2024.3.24

π接合を用いた磁束伝送回路の多段接続効果

堀裕貴, 東正志, 李峰, 田中雅光, 藤巻朗

第71回応用物理学会春季学術講演会 2024.3.24

π接合を用いた磁束伝送回路における従来の限界を超える伝送係数の実証

西崎海, 東正志, 森日向子, 李峰, 田中雅光, 藤巻朗

第71回応用物理学会春季学術講演会 2024.3.24

半磁束量子を用いた高エネルギー効率情報処理回路

田中雅光, 種村匠真, 中山彪之助, 東正志, 李峰, 藤巻朗

2024年電子情報通信学会総合大会 2024.3.5

π-SQUID の巨大インダクタンスを利用した単一磁束量子回路の検討

森日向子, 東正志, 李峰, 田中雅光, 藤巻朗

2024年電子情報通信学会総合大会 2024.3.6

Demonstration of increased efficiency in signal transfer circuits caused by a negative inductance of a π-junction International conference

A. Fujimaki, M. Higashi, H. Hori, H. Mori, F. Li, and M. Tanaka

36th International Symposium on Superconductivity 2023.11.30

Low-power operation of half-flux-quantum circuits International conference

M. Tanaka, S. Tanemura, T. Nakayama, M. Higashi, F. Li, and A. Fujimaki

36th International Symposium on Superconductivity 2023.11.30

Demonstration of essential elements for realizing low-power half-flux-quantum circuits International conference

T. Nakayama, S. Tanemura, M. Higashi, F. Li, M. Tanaka, and A. Fujimaki

18th International Superconductive Electronics Conference (ISEC 2023)

SFQ interface circuit for high-speed clock domain crossing International conference

K. Hiwaki, M. Tanaka, F. Li, and A. Fujimaki

18th International Superconductive Electronics Conference (ISEC 2023)

Impulse-driven memory cell with a directly coupled word line for reduction in footprint International conference

T. Sato, M. Higashi, F. Li, M. Tanaka, and A. Fujimaki

18th International Superconductive Electronics Conference (ISEC 2023)

Detection of timing errors in SFQ circuits International conference

P. Mundhe, K. Hiwaki, M. Tanaka, and K. Inoue

18th International Superconductive Electronics Conference (ISEC 2023)

Design, fabrication, and measurement setup of a capacitively shunted π-flux qubit controlled by a monolithic integrated SFQ circuit International conference

D. Pham, T. Ueda, S. Miyajima, H. Terai, K. Inomata, M. Tanaka, A. Fujimaki, and T. Yamashita

18th International Superconductive Electronics Conference (ISEC 2023)

Toward system-level optimization of superconducting quantum computers: the case of QAOA International conference

Y. Ueno, Y. Tomida, T. Tanimoto, M. Tanaka, Y. Tabuchi, K. Inoue, and H. Nakamura

18th International Superconductive Electronics Conference (ISEC 2023)

Integration process for 0 and π Josephson junctions into Nb four-layer devices International conference

M. Hidaka, S. Nagasawa, K. Makise, H. Yamamori, T. Sato, and M. Tanaka

18th International Superconductive Electronics Conference (ISEC 2023)

Fabrication process for superconducting devices based on nitride superconductors including ferromagnetic Josephson junction International conference

S. Miyajima, H. Terai, T. Yamashita, D. Pham, M. Tanaka, and S. Miki

18th International Superconductive Electronics Conference (ISEC 2023)

Logic and memory circuits based on π-junction-based SQUIDs International conference

A. Fujimaki, F. Li, Y. Takeshita, S. Tanemura, T. Nakayama, and M. Tanaka

18th International Superconductive Electronics Conference (ISEC 2023) 2023.11.11

Energy efficient half-flux-quantum circuit aiming at milli-kelvin stage operation International conference

F. Li, D. Pham, Y. Takeshita, S. Tanemura, M. Higashi, T. Yamashita, M. Tanaka, and A. Fujimaki

18th International Superconductive Electronics Conference (ISEC 2023) 2023.11.11

Superconducting Nb interconnects for cryo-CMOS and superconducting digital logic applications International conference

H. Numata, N. Iguchi, M. Tanaka, K. Okamoto, S. Miura, K. Uchida, H. Ishikuro, T. Sakamoto, and M. Tada

Advanced Metallization Conference 2023: Asian Session（ADMETA Plus 2023） 2023.10.12

π-SQUIDに基づく磁気結合素子の静的解析

東正志, 森日向子, 李峰, 田中雅光, 藤巻朗

第84回応用物理学会秋季学術講演会 2023.9.21

窒化物系超伝導体に基づく磁性接合を含む集積回路プロセスの開発

宮嶋茂之, 寺井弘高, 山下太郎, 田中雅光, 竹内尚輝, 三木茂人

第84回応用物理学会秋季学術講演会 2023.9.21

Superconducting Full-wave Rectifier Using π-JJ-based Phase Shifter

第84回応用物理学会秋季学術講演会 2023.9.21

π-π-π SQUIDにおける共振ステップの観測

堀裕貴, 李峰, 中山彪之助, 東正志, 田中雅光, 藤巻朗

第84回応用物理学会秋季学術講演会 2023.9.21

π接合で構成した断熱量子磁束パラメトロンの検討

藤村海斗, 田中雅光, 李峰, 藤巻朗

2023年電子情報通信学会ソサイエティ大会 2023.9.15

多量子ビット制御に向けたNbNベース単一磁束量子スイッチ制御付き4出力分岐回路

上田伴春, 宮嶋茂之, 寺井弘高, PhamDuong, 田中雅光, 山下太郎, 西村治道, 藤巻朗

2023年電子情報通信学会ソサイエティ大会 2023.9.15

単一磁束量子回路に基づくリセット機能付きFIFO同期器の設計

樋脇晃祐, 田中雅光, 李峰, 藤巻朗

2023年電子情報通信学会ソサイエティ大会 2023.9.15

半磁束量子回路のD フリップフロップの動作実証

種村匠真, 東正志, 中山彪之助, 李峰, 田中雅光, 藤巻朗

2023年電子情報通信学会ソサイエティ大会 2023.9.15

Analysis of the AC response of single π-junction-SQUIDs International conference

M. Higashi, F. Li, Y. Takeshita, M. Tanaka, and A. Fujimaki

16th European Conference on Applied Superconductivity 2023.9.4

Gate-level-pipeline SFQ circuits for high-throughput floating-point arithmetic International conference

M. Tanaka, I. Nagaoka, R. Kashima, K. Hiwaki, S. Kawakami, T. Tanimoto, T. Ono, K. Inoue, T. Yamashita, and A. Fujimaki

16th European Conference on Applied Superconductivity 2023.9.6

Field free superconducting diode effect with π-JJ-based arbitrary phase shifter International conference

F. Li, T. Sato, H. Fujisawa, M. Higashi, Y. Takeshita, M. Tanaka, and A. Fujimaki

16th European Conference on Applied Superconductivity 2023.9.6

Demonstration of impulse-driven memories with bias-free storage cells Invited International conference

A. Fujimaki, Y. Takeshita, H. Fujisawa, T. Sato, M. Higashi, F. Li, and M. Tanaka

16th European Conference on Applied Superconductivity 2023.9.5

Evaluation of energy consumption and frequency in impulse-driven memories International conference

T. Sato, H. Fujisawa, M. Higashi, Y. Takeshita, F. Li, M. Tanaka, and A. Fujimaki

16th European Conference on Applied Superconductivity 2023.9.4

動特性を考慮したインパルス駆動型メモリセルの詳細設計

佐藤太一, 藤澤日向, 東正志, 竹下雄登, 李峰, 田中雅光, 藤巻朗

電子情報通信学会超伝導エレクトロニクス研究会 2023.8.8

Analysis of the giant inductance effect in single π-junction-SQUIDs International conference

Masayuki Higashi, Feng Li, Yuto Takeshita, Masamitsu Tanaka, and Akira Fujimaki

11th East Asia Symposium on Superconductor Electronics (EASSE 2023) 2023.3.27

Impact of π-junction-based SQUIDs on superconductor circuits Invited International conference

Akira Fujimaki, Yuto Takeshita, Masayuki Higashi, Hinata Fujisawa, Shoma Tanemura, Feng Li, and Masamitsu Tanaka

11th East Asia Symposium on Superconductor Electronics (EASSE 2023) 2023.3.28

Design of half flux quantum circuits with controllability in energy efficiency International conference

Toranosuke Nakayama, Yuto Takeshita, Feng Li, Shoma Tanemura, Masamitsu Tanaka, and Akira Fujimaki

11th East Asia Symposium on Superconductor Electronics (EASSE 2023) 2023.3.27

Demonstration of a superconductor 8-bit microprocessor based on high-throughput single-flux-quantum logic circuits Invited International conference

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

11th East Asia Symposium on Superconductor Electronics (EASSE 2023) 2023.3.27

0-0-π SQUIDの非対称性が半磁束量子回路に及ぼす影響

中山彪之助, 堀裕貴, 竹下雄登, 李峰, 田中雅光, 藤巻朗

第70回応用物理学会春季学術講演会 2023.3.16

微小信号領域におけるπ-SQUIDの巨大インダクタンスとしての挙動解析

東正志, 竹下雄登, 李峰, 田中雅光, 藤巻朗

第70回応用物理学会春季学術講演会 2023.3.16

半磁束量子回路の安定動作に向けた回路構成法に関する研究

袁磊, 竹下雄登, 東正志, 中山彪之助, 李峰, 田中雅光, 藤巻朗

第70回応用物理学会春季学術講演会 2023.3.16

インパルス駆動型メモリの拡張性に関する検討

佐藤太一, 藤澤日向, 竹下雄登, 李峰, 田中雅光, 藤巻朗

第70回応用物理学会春季学術講演会 2023.3.16

π-SQUIDに基づくインパルス駆動メモリセルの動作実証

竹下雄登, 藤澤日向, 東正志, 李峰, 田中雅光, 藤巻朗

第70回応用物理学会春季学術講演会 2023.3.16

Superconducting diode using π-JJ-based arbitrary phase shifter

Feng Li, Taichi Sato, Hinata Fujisawa, Yuto Takeshita, Masamitsu Tanaka, and Akira Fujimaki

2023.3.16

NbNジョセフソン接合による単一磁束量子回路の希釈冷凍機下における動作

上田伴春, 中山彪之助, 宮嶋茂之, 寺井弘高, PHAM Duong, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会2023年総合大会 2023.3.10

半磁束量子回路のパラメータ設計指針

種村匠真, 中山彪之助, 竹下雄登, LI Feng, 田中雅光, 藤巻朗

電子情報通信学会2023年総合大会 2023.3.10

A compact giant inductance device based on the negative flowing current across the ferromagnetic Josephson junction for superconducting electronics Invited International conference

Feng Li, Masayuki Higashi, Yuto Takeshita, Masamitsu Tanaka, and Akira Fujimaki

International Forum on Applied Superconductivity and Magnetism (IFASM Oceania 2022) 2022.12.1

Half flux quantum circuit based on π-junctions Invited International conference

Akira Fujimaki, Feng Li, Yuto Takeshita, Masayuki Higashi, and Masamitsu Tanaka

35th International Symposium on Superconductivity (ISS 2022) 2022.12.7

Analysis of the effect of 0-π SQUIDs for enhancing mutual coupling International conference

Masayuki Higashi, Yuto Takeshita, Kento Kato, Hinata Fujisawa, Feng Li, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki

2022 Applied Superconductivity Conference (ASC2022) 2022.10.26

The power efficient half-flux-quantum circuits based on π-π-π SQUIDs aiming at the control of qubit circuits at 10 mK stage International conference

Feng Li, Duong Pham, Yuto Takeshita, Masayuki Higashi, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki

2022 Applied Superconductivity Conference (ASC2022) 2022.10.25

Optimization of half flux quantum circuits composed of π-shift and conventional Josephson junctions International conference

Shoma Tanemura, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki

2022 Applied Superconductivity Conference (ASC2022) 2022.10.26

NbN-based half-flux-quantum SQUID with hybrid structures of 0- and π-junctions International conference

Taro Yamashita, Yuto Takeshita, Masamitsu Tanaka, Duong Pham, Shigeyuki Miyajima, Hirotaka Terai, and Akira Fujimaki

2022 Applied Superconductivity Conference (ASC2022) 2022.10.27

NbN-based half-flux-quantum circuits with superconductor/insulator/ferromagnet/superconductor junctions International conference

Duong Pham, Riku Sugimoto, Kenjiro Oba, Feng Li, Yuto Takeshita, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki

2022 Applied Superconductivity Conference (ASC2022) 2022.10.26

Lowering latency in high-speed gate-level-pipelined single flux quantum datapath using interleaved register file Invited International conference

Ryota Kashima, Ikki Nagaoka, Tomoki Nakano, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki

2022 Applied Superconductivity Conference (ASC2022) 2022.10.24

Fabrication process for monolithic integration of nitride superconductor-based superconducting qubit with single flux quantum control circuit International conference

Shigeyuki Miyajima, Taro Yamashita, Masamitsu Tanaka, Naoki Takeuchi, Kunihiro Inomata, and Hirotaka Terai

2022 Applied Superconductivity Conference (ASC2022) 2022.10.26

Design and fabrication of extremely low-power single-flux-quantum circuits toward quantum bit control International conference

Masamitsu Tanaka, Yoshihiro Kitagawa, Tetsuro Satoh, and Tsuyoshi Yamamoto

2022 Applied Superconductivity Conference (ASC2022) 2022.10.26

Demonstration of selective access of impulse-driven, multi-bits memory based on 0-π SQUIDs International conference

Yuto Takeshita, Hinata Fujisawa, Masayuki Higashi, Feng Li, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki

2022 Applied Superconductivity Conference (ASC2022) 2022.10.27

A giant inductance device based on the negative flowing current across the ferromagnetic Josephson junction for superconducting electronics International conference

Feng Li, Masayuki Higashi, Yuto Takeshita, Masamitsu Tanaka, and Akira Fujimaki

15th Superconducting SFQ VLSI Workshop (SSV 2022) / 4rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022) 2022.9.30

High-throughput single-flux-quantum circuits based on gate-level-pipelining toward artificial intelligence applications International conference

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

15th Superconducting SFQ VLSI Workshop (SSV 2022) / 4rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022) 2022.9.29

Demonstration of writing operation of 0-π-SQUID-based memory cells using only impulseshaped voltage pulses International conference

Yuto Takeshita, Hinata Fujisawa, Masayuki Higashi, Feng Li, Masamitsu Tanaka, and Akira Fujimaki

15th Superconducting SFQ VLSI Workshop (SSV 2022) / 4rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022) 2022.9.30

Demonstration of non-destructive readout of impulse-driven memory cell based on 0-π squids International conference

Hinata Fujisawa, Yuto Takeshita, Masayuki Higashi, Feng Li, Masamitsu Tanaka, and Akira Fujimaki

15th Superconducting SFQ VLSI Workshop (SSV 2022) / 4rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022) 2022.9.30

Analysis of single-π-junction SQUIDs acting as a giant inductance International conference

Masayuki Higashi, Feng Li, Yuto Takeshita, Masamitsu Tanaka, and Akira Fujimaki

15th Superconducting SFQ VLSI Workshop (SSV 2022) / 4rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022) 2022.9.30

Recent progress in the development of NbN/PdNi/NbN π junctions for quantum circuits International conference

Duong Pham, Kenjiro Oba, Yuto Takeshita, Feng Li, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki

15th Superconducting SFQ VLSI Workshop (SSV 2022) / 4rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022) 2022.9.30

NbNベース半磁束量子回路の実現に向けたトグルフリップフロップ回路の作製

大場絢次郎, PHAM Duong, 田中雅光, 山下太郎, 藤巻朗

第83回応用物理学会秋季学術講演会 2022.9.22

SFIS磁性π接合に基づくアンシャントSFQ回路の特性評価

李峰, 袁磊, 竹下雄登, 東正志, 田中雅光, 藤巻朗

第83回応用物理学会秋季学術講演会 2022.9.22

量子コンピュータに向けた超伝導ディジタル周辺回路 Invited

田中雅光

電子情報通信学会2022年ソサイエティ大会 2022.9.7

半磁束量子回路の半磁束量子-電圧変換回路のパラメータ最適化

種村匠真, 竹下雄登, 李峰, 田中雅光, 藤巻朗

電子情報通信学会2022年ソサイエティ大会 2022.9.7

量子ビットとのモノリシック実装に向けたNbNベース低電圧駆動単一磁束量子回路の設計

上田伴春, 中山彪之助, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会2022年ソサイエティ大会 2022.9.7

高い磁気結合を得るためのπ接合を用いたSQUIDの解析

東正志, 竹下雄登, 藤澤日向, 李峰, 田中雅光, 藤巻朗

電気情報通信学会超伝導エレクトロニクス研究会 2022.8.9

π-π-π SQUIDs: The Switching Element of HFQ Circuits Operating at mK Invited

F. Li, D. Pham, Y. Takeshita, K. Kato, M. Tanaka, T. Yamashita, A. Fujimaki

The 69nd Japan Society of Applied Physics Spring Meeting, 2022 2022.3.23

Design of Single Flux Quantum Circuits with Critical Current Density Process Lowered to 250 A/cm2 toward Quantum Bit Control

Masamitsu Tanaka, Yoshihiro Kitagawa, Tetsuro Satoh, Tsuyoshi Yamamoto

The 69nd Japan Society of Applied Physics Spring Meeting, 2022 2022.3.23

Development of a fabrication process for superconducting integrated circuits based on nitride superconductors for qubit control

Shigeyuki Miyajima, Taro Yamashita, Masamitsu Tanaka, Naoki Takeuchi, Hirotaka Terai

The 69nd Japan Society of Applied Physics Spring Meeting, 2022 2022.3.23

Demonstration of controlling the state of memory cell by impulse-signals

Yuto Takeshita, Hinata Fujisawa, Kento Kato, Masayuki Higashi, Feng Li, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

The 69nd Japan Society of Applied Physics Spring Meeting, 2022 2022.3.23

Analysis of the SQUID based on π-junction for high magnetic permeability

Masayuki Higashi, Yuto Takeshita, Kento Kato, Hinata Fujisawa, Feng Li, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

The 69nd Japan Society of Applied Physics Spring Meeting, 2022 2022.3.23

170-GHz Operation of Single Flux Quantum Shift-Registers Using 25 kA/cm2 Nb/Al/AlOx/Al/Nb Junctions

Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki, Kazumasa Makise, Shuichi Nagasawa, Mutsuo Hidaka

The 69nd Japan Society of Applied Physics Spring Meeting, 2022 2022.3.23

Design and fabrication of toggle flip-flop circuit with NbN-based half flux quantum

Riku Sugimoto, Kenjiro Oba, Pham Duong, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

The 69nd Japan Society of Applied Physics Spring Meeting, 2022 2022.3.23

Design of NbN-Based, Extremely Low-Power Single-Flux-Quantum Circuits toward Monolithic Integration with Quantum Bits

Toranosuke Nakayama, Tomoharu Ueda, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

The 69nd Japan Society of Applied Physics Spring Meeting, 2022 2022.3.23

Demonstration of Gate-Level-Pipelined Floating-Point Units Using Single-Flux-Quantum Circuits

Ikki Nagaoka, Ryota Kashima, Masamitsu Tanaka, Satoshi Kawakami, Teruo Tanimoto, Taro Yamashita, Koji Inoue, Akira Fujimaki

2022 IEICE General Conference 2022.3.16

Interactive Visualization of SFQ Transmission Line

Akira Miura, Keiichi Matsuzaki, Takayuki Ishida, Masamitsu Tanaka, Koji Inoue

2022 IEICE General Conference 2022.3.16

Optimization of circuit parameters of half flux quantum circuits

Shoma Tanemura, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

2022 IEICE General Conference 2022.3.16

Design and Evaluation of Via Holes for Narrowed Passive Transmission Lines toward Area Reduction of Single-Flux-Quantum Circuits

Ryota Kashima, Ikki Nagaoka, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

2022 IEICE General Conference 2022.3.16

宇宙機での利用に向けたデバイス開発に係る可視化 —単一磁束量子回路の例—

三浦昭, 松崎恵一, 石田貴行, 田中雅光, 井上弘士

2021年度宇宙科学情報解析シンポジウム 2022.2.17

Half-flux-quantum circuits using π-shifted ferromagnetic junctions Invited International conference

Feng Li, Yuto Takeshita, Daiki Hasegawa, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

34th International Symposium on Superconductivity (ISS2021) 2021.12.1

π-phase shift in NbN-based Josephson junctions with weak ferromagnet Pd₈₉Ni₁₁ interlayer

Duong Pham, Riku Sugimoto, Kenjiro Oba, Yuto Takeshita, Feng Li, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

2021.11.15

Pi-phase shift in NbN-based Josephson junctions with weak ferromagnet Pd89Ni11 interlayer

D. Pham, R. Sugimoto, K. Oba, Y. Takeshita, F. Li, M. Tanaka, T. Yamashita, A. Fujimaki

2021.11.15

Superconducting Quantum Circuits toward Demonstration of Quantum Advantage in Simultaneous Quantum Messages Protocols International conference

T. Yamashita, D. Pham, M. Tanaka, K. Inomata, and H. Nishimura

The Joint Workshop of 14th Superconducting SFQ VLSI Workshop (SSV 2021) and 3rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2021) 2021.11.10

Low-power Half-flux-quantum Circuits and the Fabrication Process Based on Ferromagnetic SFIS Josephson Junctions International conference

F. Li, Y. Takeshita, D. Hasegawa, M. Tanaka, T. Yamashita, and A. Fujimaki

The Joint Workshop of 14th Superconducting SFQ VLSI Workshop (SSV 2021) and 3rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2021) 2021.11.9

Controlling Flexibility of Information Carrier Using Magnetic Josephson Junctions toward Highly Energy-Efficient Processing International conference

M. Tanaka, M. Higashi, T. Yamashita, A. Fujimaki, K. Makise, and T. Ono

The Joint Workshop of 14th Superconducting SFQ VLSI Workshop (SSV 2021) and 3rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2021) 2021.11.10

Study on Pulse-Driven, Low Energy Consumption Memory Based on 0-π SQUIDs International conference

Y. Takeshita, F. Li, H. Fujisawa, K. Kato, M. Higashi, M. Tanaka, T. Yamashita, and A. Fujimaki

The Joint Workshop of 14th Superconducting SFQ VLSI Workshop (SSV 2021) and 3rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2021) 2021.11.9

Pursuit of High-Speed Operation and Low Energy Consumption in Superconductor Logic Circuits International conference

A. Fujimaki, F. Li, M. Tanaka, and T. Yamashita

The Joint Workshop of 14th Superconducting SFQ VLSI Workshop (SSV 2021) and 3rd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2021) 2021.11.9

単一磁束量子回路に基づくゲートレベルパイプライン浮動小数点演算器の設計

長岡一起, 加島亮太, 田中雅光, 山下太郎, 川上哲志, 井上弘士, 藤巻朗

2021年電子情報通信学会ソサイエティ大会 2021.9.16

アンシャント接合による加算器の高速化

国吉真波, 長岡一起, 田中雅光, 山下太郎, 藤巻朗

2021年電子情報通信学会ソサイエティ大会 2021.9.16

低レイテンシ化を目的としたインターリーブ方式レジスタを伴う単一磁束量子データパスの動作実証

加島亮太, 長岡一起, 中埜智貴, 田中雅光, 山下太郎, 藤巻朗

2021年電子情報通信学会ソサイエティ大会 2021.9.16

磁性ジョセフソン接合を用いたインパルス駆動型超伝導メモリセルの動作実証

藤澤日向, 竹下雄登, 加藤健人, 東正志, 李峰, 田中雅光, 山下太郎, 藤巻朗

第82回応用物理学会秋季学術講演会 2021.9.12

インパルス駆動型マルチビットメモリの作製と実証

竹下雄登, 藤澤日向, 加藤健人, 東正志, 李峰, 田中雅光, 山下太郎, 藤巻朗, 藤巻朗

第82回応用物理学会秋季学術講演会 2021.9.12

高透磁率を得るためのπ接合を用いた人工スピン系の提案

東正志, 竹下雄登, 加藤健人, 藤澤日向, 李峰, 田中雅光, 山下太郎, 藤巻朗, 藤巻朗

第82回応用物理学会秋季学術講演会 2021.9.12

10kA/cm²プロセスを用いた単一磁束子100GHzビット並列加算器の実証

中埜智貴, 長岡一起, 加島亮太, 田中雅光, 山下太郎, 藤巻朗

第82回応用物理学会秋季学術講演会 2021.9.12

半磁束量子を利用した小面積Tフリップフロップの解析

中村, 祐介正志, 東正志, 竹下雄登, 李峰, 田中雅光, 山下太郎, 藤巻朗, 山下太郎, 藤巻朗

第82回応用物理学会秋季学術講演会 2021.9.12

インパルス信号による超伝導マトリクスメモリの内部状態の読み出し

加藤健人, 竹下雄登, 藤澤日向, 東正志, 李峰, 田中雅光, 山下太郎, 藤巻朗, 藤巻朗

第82回応用物理学会秋季学術講演会 2021.9.12

量子ビット応用に向けた絶縁層を含む強磁性ジョセフソン接合の開発

大場絢次郎, PhamDuong, 杉本理駆, 田中雅光, 山下太郎, 藤巻朗, 田中雅光, 山下太郎, 藤巻朗

第82回応用物理学会秋季学術講演会 2021.9.12

π-π-π SQUIDに基づく半磁束量子Tフリップフロップ

李峰, 竹下雄登, 東正志, 田中雅光, 山下太郎, 藤巻朗

第82回応用物理学会秋季学術講演会 2021.9.12

Demonstration of impulse-driven, high-speed memories based on 0-π SQUIDs International conference

Y. Takeshita, H. Fujisawa, K. Kato, M. Higashi, F. Li, M. Tanaka, T. Yamashita, and A. Fujimaki

15th European Conference on Applied Superconductivity (EUCAS 2021) 2021.9.5

Demonstration of π-phase shift in NbN-based Josephson junctions with Pd89 Ni11 ferromagnetic interlayers International conference

D. Pham, R. Sugimoto, K. Oba, Y. Takeshita, F. Li, M. Tanaka, T. Yamashita, and A. Fujimaki

15th European Conference on Applied Superconductivity (EUCAS 2021) 2021.9.5

Implementation of a High-Throughput Bit-Parallel Microprocessor Using Single-Flux-Quantum Logic Invited International conference

I. Nagaoka, R. Kashima, T. Nakano, M. Tanaka, T. Yamashita, and A. Fujimaki

15th European Conference on Applied Superconductivity (EUCAS 2021) 2021.9.5

Demonstration of Half-Flux-Quantum T-Flip Flops Made up with only π Junctions International conference

F. Li, Y. Takeshita, K. Kato, M. Higashi, M. Tanaka, T. Yamashita, and A. Fujimaki

15th European Conference on Applied Superconductivity (EUCAS 2021) 2021.9.5

Study on magnetic properties of π-junction-based artificial spin systems International conference

M. Higashi, Y. Takeshita, K. Kato, H. Fujisawa, F. Li, M. Tanaka, T. Yamashita, and A. Fujimaki

15th European Conference on Applied Superconductivity (EUCAS 2021) 2021.9.5

磁場変調周期が半磁束量子となるSQUIDの評価

竹下雄登, 東正志, 李峰, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会超伝導エレクトロニクス研究会 2021.8.6

フィードバックパスを伴う単一磁束量子回路の高スループット・低レイテンシ化

加島亮太, 長岡一起, 中埜智貴, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会超伝導エレクトロニクス研究会 2021.8.6

超伝導回路を用いた量子誤り訂正向けオンライン復号器の提案

上野洋典, 近藤正章, 田中雅光, 鈴木泰成, 田渕豊

情報処理学会第2回量子ソフトウェア研究発表会 2021.3.29

超伝導ニューラルネットワーク・アクセラレータのアーキテクチャ探索を目的とした電力性能モデリング International coauthorship

石田浩貴, IlkwonByun, 長岡一起, 福光孝介, 田中雅光, 川上哲志, 谷本輝夫, 小野貴継, 藤巻朗, JangwooKim, 井上弘士

組込み技術とネットワークに関するワークショップ ETNET2021 2021.3.25

磁性ジョセフソン接合を含むSQUIDによる半磁束量子単位変調

竹下雄登, 加藤健人, 長谷川大輝, 李峰, 田中雅光, 山下太郎, 藤巻朗

第68回応用物理学会春季学術講演会 2021.3.18

半磁束量子-単一磁束量子変換回路の実証

中村祐介, 長谷川大輝, 竹下雄登, 李峰, 田中雅光, 山下太郎, 藤巻朗

第68回応用物理学会春季学術講演会 2021.3.18

パルス駆動型超伝導マトリクスメモリにおけるセル選択に関する研究

加藤健人, 竹下雄登, 東正志, 長谷川大輝, 藤澤日向, 李峰, 田中雅光, 山下太郎, 藤巻朗

第68回応用物理学会春季学術講演会 2021.3.18

パルス駆動型メモリの実現に向けた低電流で駆動可能なメモリセルの設計と評価

藤澤日向, 竹下雄登, 加藤健人, 東正志, 長谷川大輝, 李峰, 田中雅光, 山下太郎, 藤巻朗

第68回応用物理学会春季学術講演会 2021.3.18

NbN/PdNi/NbN 接合におけるジョセフソン臨界電流の強磁性膜厚依存性

杉本理駆, PhamDuong, 中村颯, 田中雅光, 山下太郎, 藤巻朗

第68回応用物理学会春季学術講演会 2021.3.18

SFQアニーラに向けた単一のスピン素子の特性評価

東正志, 長谷川大輝, 竹下雄登, 加藤健人, 藤澤日向, 李峰, 田中雅光, 山下太郎, 藤巻朗

第68回応用物理学会春季学術講演会 2021.3.18

NbN-based Josephson junction with PdNi-ferromagnetic barrier International conference

Duong Pham, Riku Sugimoto, Hayate Nakamura, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki, Yasunobu Nakamura

American Physical Society (APS) March Meeting 2021 2021.3.18

アンシャント接合によるSFQ論理ゲートのエネルギー効率の向上

国吉真波, 長岡一起, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会2021年総合大会 2021.3.9

単一磁束量子回路に基づく 50GHzビット並列演算マイクロプロセッサの設計

長岡一起, 加島亮太, 中埜智貴, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会2021年総合大会 2021.3.9

単一磁束量子回路の高集積化へ向けた細線受動伝送線路の評価

加島亮太, 長岡一起, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会2021年総合大会 2021.3.9

低消費電力単一磁束量子回路の動作周波数の調査

国吉真波, 村瀬健, 長岡一起, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会超伝導エレクトロニクス研究会 2021.1.18

Study on superconductor low-energy particle detectors for measurement of angular correlation between neutrino and electron in beta decay

Masamitsu Tanaka and Masaaki Kitaguchi

2020.12.22

Quantum error correction with a superconducting decoder International conference

Yosuke Ueno, Masaaki Kondo, Masamitsu Tanaka, Yasunari Suzuki, Yutaka Tabuchi

2nd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2020) 2020.12.15

Extremely energy-efficient processing using superconductor circuits near physical limits International conference

Masamitsu Tanaka, Manami Kuniyoshi, Ken Murase, Ikki Nagaoka, Taro Yamashita, Akira Fujimaki

2nd Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2020) 2020.12.15

Study on pulse-driven, high-speed memory based on 0-π SQUIDs with passive transmission lines International conference

Yuto Takeshita, Feng Li, Daiki Hasegawa, Kyosuke Sano, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

2020 Applied Superconductivity Conference (ASC 2020) 2020.10.28

Proposal of SFQ annealer using π-junction-based SQUIDs operating at 4 k International conference

Masashi Higashi, Daiki Hasegawa, Yuto Takeshita, Feng Li, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

2020 Applied Superconductivity Conference (ASC 2020) 2020.10.30

Demonstration of a 52-GHz, energy-efficient, bit-parallel multiplier using low-voltage rapid single-flux-quantum logic International conference

Ikki Nagaoka, Koki Ishida, Masamitsu Tanaka, Kyosuke Sano, Taro Yamashita, Takatsugu Ono, Koji Inoue, Akira Fujimaki

2020 Applied Superconductivity Conference (ASC 2020) 2020.11.2

50-GHz datapath for parallel SFQ microprocessors based on gate-level-pipeline architecture Invited International conference

Ryota Kashima, Ikki Nagaoka, Masamitsu Tanaka, Kyosuke Sano, Taro Yamashita, Akira Fujimaki

2020 Applied Superconductivity Conference (ASC 2020) 2020.11.5

Demonstration of π-junction-based SQUIDs with half-flux-quantum modulation periods for energy-efficient circuits International conference

Feng Li, Yuto Takeshita, Daiki Hasegawa, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

2020 Applied Superconductivity Conference (ASC 2020) 2020.11.4

Investigation of timing parameters in single flux quantum circuits using low critical current junctions and low bias voltages International conference

Manami Kuniyoshi, Ken Murase, Ikki Nagaoka, Kyosuke Sano, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

2020 Applied Superconductivity Conference (ASC 2020) 2020.11.4

High-density routing with wire length matching for single-flux-quantum circuits using thin passive transmission lines International conference

Kei Kitamura, Masamitsu Tanaka, Takahiro Kawaguchi, Ikki Nagaoka, Kazuyoshi Takagi, Akira Fujimaki, Naofumi Takagi

2020 Applied Superconductivity Conference (ASC 2020) 2020.11.4

Analysis on half flux quantum circuits formed with π and conventional Josephson junctions International conference

Daiki Hasegawa, Yuto Takeshita, Feng Li, Kyosuke Sano, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki

2020 Applied Superconductivity Conference (ASC 2020) 2020.11.4

Study on the nanocryotron switching behavior by the numerical calculation International conference

Masumi Inoue, Ikumi Miyazaki, Kazuki Izaki, Kyosuke Sano, Taro Yamashita, Masamitsu Tanaka, Akira Fujimaki

2020 Applied Superconductivity Conference (ASC 2020) 2020.11.3

単一磁束量子回路に基づく並列処理データパスの 64GHz動作実証

加島亮太, 長岡一起, 田中雅光, 山下太郎, 藤巻朗

2020年電子情報通信学会ソサイエティ大会 2020.9.17

フィードバックループを含む単一磁束量子回路の高周波設計に向けたカウンターフロー方式シフトレジスタのタイミング解析

長岡一起, 加島亮太, 田中雅光, 山下太郎, 藤巻朗

2020年電子情報通信学会ソサイエティ大会 2020.9.17

低消費電力単一磁束量子回路における論理ゲートのタイミングパラメータ解析

国吉真波, 長岡一起, 田中雅光, 山下太郎, 藤巻朗

2020年電子情報通信学会ソサイエティ大会 2020.9.17

半磁束量子回路の実現に向けた基本素子の作製

長谷川大輝, 加藤健人, 東正志, 竹下雄登, 李峰, 田中雅光, 山下太郎, 藤巻朗

第81回応用物理学会秋季学術講演会 2020.9.8

SFQパルス駆動型超伝導メモリ実現に向けたメモリセルの静特性評価

竹下雄登, 李峰, 長谷川大輝, 加藤健人, 田中雅光, 山下太郎, 藤巻朗

第81回応用物理学会秋季学術講演会 2020.9.8

広帯域配線を備えた超伝導デジタル回路用冷凍機システムの特性評価

村瀬健, 藤巻朗, 山下太郎, 田中雅光, 佐野京佑

第81回応用物理学会秋季学術講演会 2020.9.8

SFQアニーラにおける隣接するスピン間の相互作用の影響

東正志, 長谷川大輝, 竹下雄登, 李峰, 田中雅光, 山下太郎, 藤巻朗

第81回応用物理学会秋季学術講演会 2020.9.8

π位相シフタに向けたコバルト障壁層をもつ強磁性ジョセフソン接合の作製と評価

中村颯, 杉本理駆, PhamDuong, 田中雅光, 山下太郎, 藤巻朗

第81回応用物理学会秋季学術講演会 2020.9.8

単一磁束量子回路に基づく50 GHz並列処理データパスの設計

加島亮太, 長岡一起, 田中雅光, 佐野京佑, 山下太郎, 藤巻朗

電子情報通信学会2020年総合大会 2020.3.18

単一磁束量子回路に基づく低電圧駆動ゲートレベルパイプライン算術論理演算器の設計と評価

長岡一起, 田中雅光, 佐野京佑, 山下太郎, 井上弘士, 藤巻朗

電子情報通信学会2020年総合大会 2020.3.18

低電圧駆動単一磁束量子回路における論理ゲートのタイミングパラメータの解析

国吉真波, 村瀬健, 長岡一起, 佐野京佑, 田中雅光, 山下太郎, 藤巻朗

電子情報通信学会2020年総合大会 2020.3.18

超伝導受動線路を用いたパルス駆動型超伝導メモリの開発

竹下雄登, 長谷川大輝, 李峰, 佐野京佑, 田中雅光, 山下太郎, 藤巻朗

第67回応用物理学会春季学術講演会 2020.3.13

接合付加による半磁束量子回路の低消費エネルギー化

藤巻朗, 李峰, 竹下雄登, 長谷川大輝, 佐野京佑, 田中雅光, 山下太郎

第67回応用物理学会春季学術講演会 2020.3.14

半磁束量子回路の実証に向けた動作解析

長谷川大輝, 竹下雄登, 李峰, 佐野京佑, 田中雅光, 山下太郎, 藤巻朗

第67回応用物理学会春季学術講演会 2020.3.14

4.2Kで動作するSFQアニーラに向けたπ接合を用いたSQUIDの解析

東正志, 長谷川大輝, 竹下雄登, LiFeng, 田中雅光, 山下太郎, 藤巻朗

第67回応用物理学会春季学術講演会 2020.3.14

コバルト障壁層をもつ強磁性ジョセフソン接合の作製と評価

中村颯, 加藤悠輝, 田中雅光, 山下太郎, 藤巻朗

第67回応用物理学会春季学術講演会 2020.3.14

Development of gate-level-pipelined SFQ circuits toward ultra-high-speed cryogenic computing Invited International conference

Masamitsu Tanaka, Ikki Nagaoka, Koki Ishida, Kyosuke Sano, Taro Yamashita, Takatsugu Ono, Koji Inoue, Akira Fujimaki

13th Superconducting SFQ VLSI Workshop (SSV 2020)

Development of 50-GHz, high-throughput rapid single-flux-quantum circuits toward ultra-fast, energy-efficient computing Invited International conference

Masamitsu Tanaka, Ikki Nagaoka, Kyosuke Sano, Taro Yamashita, Koki Ishida, Takatsugu Ono, Koji Inoue, Akira Fujimaki

10th Asian Conference on Applied Superconductivity and Cryogenics (ACASC), 2nd International Cryogenic Materials Conference in Asia (Asian-ICMC), and CSSJ Joint Conference

単一磁束量子回路の現状と将来展望～高速性と低エネルギー性を如何に両立するか～

田中雅光

応用物理学会超伝導分科会第60回研究会

π-shifted SQUID based circuits and applications for classical computing and beyond International conference

Masamitsu Tanaka, Yuto Takeshita, Daiki Hasegawa, Feng Li, Kyosuke Sano, Taro Yamashita, Akira Fujimaki

1st Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2019)

Study on superconductor nano-structured line drivers in random access memories

Numerical analysis of low-power logic family based on half flux quantum using π-shifted Josephson junctions International conference

Masamitsu Tanaka, Tomohiro Kamiya, Yuto Takeshita, Yuta Yoshinomoto, Daiki Hasegawa, Kyosuke Sano, Taro Yamashita, Akira Fujimaki

17th International Superconductive Electronics Conference (ISEC 2019)

単一磁束量子回路に基づくゲートレベル・パイプライン算術論理演算器の高エネルギー効率化と0.3mW, 30GHz動作実証

田中雅光, 長岡一起, 石田浩貴, 佐野京佑, 山下太郎, 小野貴継, 井上弘士, 藤巻朗

2019年並列／分散／協調処理に関する『北見』サマー・ワークショップ（SWoPP2019）

Study on superconductor low-energy particle detectors for measurement of angular correlation between neutrino and electron in beta decay

High-speed operation of datapath for bit-parallel single-flux-quantum microprocessors

Yuki Hatanaka, Ikki Nagaoka, Yuichi Matsui, Koki Ishida, Kyosuke Sano, Masamitsu Tanaka, Takatsugu Ono, Koji Inoue, Akira Fujimaki

2016 IEICE General Conference

Design of superconducting digital circuits composed of π-shifted Josephson junctions

Tomohiro Kamiya, Soya Taniguchi, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

The 65th Japan Society of Applied Physics Spring Meeting

Design and fabrication of ferromagnetic matrix memory and readout circuit with adiabatic quantum flux parametrons

Hayato Iwashita, Soya Taniguchi, Haruki Kato, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

The 65th Japan Society of Applied Physics Spring Meeting

Fabrication of nanocryotron and evaluation of the static characteristics

Kyohei Maruyama, Masato Suzuki, Kyosuke Sano, Taro Yamashita, Masamitsu Tanaka, Ali Bozbey, Akira Fujimaki, Masumi Inoue

The 65th Japan Society of Applied Physics Spring Meeting

Superconducting phase engineering in flux-quantum-based circuits for higher performances

Akira Fujimaki, Soya Taniguchi, Masamitsu Tanaka

2018 Annual Meeting of the IEEJ

Power conversion efficiency of superconductor rectifier International conference

Soya Taniguchi, Haruki Kato, Tomohiro Kamiya, Hayato Iwashita, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium

AQFP readout for ferromagnetic matrix memory International conference

Hayato Iwashita, Soya Taniguchi, Haruki Kato, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium

Study on operation principle of nanocryotrons International conference

Kyohei Maruyama, Masato Suzuki, Naoki Kondo, Kyosuke Sano, Masamitsu Tanaka, Masumi Inoue, Akira Fujimaki

11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium

Study on magnetically-controlled delay time in Josephson transmission lines International conference

Yuichi Matsui, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium

Low-power half single flux quantum circuits using π-shifted Josephson junctions International conference

Tomohiro Kamiya, Soya Taniguchi, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium

Study on nano-structured devices based on pseudo-two-dimensional superconductors

Kyosuke Sano, Masato Suzuki, Kyohei Maruyama, Masamitsu Tanaka, Akira Fujimaki, Masumi Inoue

Study on power-efficient driving of single flux quantum circuits with superconducting rectifiers

Haruki Kato, Soya Taniguchi, Tomohiro Kamiya, Hayato Iwashita, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

Numerical analysis of rapid single-flux-quantum circuits composed of 0- and π-shifted Josephson junctions International conference

Tomohiro Kamiya, Soya Taniguchi, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

30th International Symposium on Superconductivity (ISS2017)

Cryogenic Digital Electronics --Challenges for Practical Use-- Invited International conference

Akira Fujimaki, Masamitsu Tanaka

30th International Symposium on Superconductivity (ISS2017)

Execution of stored programs in a singlefluxquantum microprocessor with embedded memories at 50 GHz Invited International conference

Akira Fujimaki, Ryo Sato, Yuki Hatanaka, Yuichi Matsui, Kazuyoshi Takagi, Naofumi Takagi, Masamitsu Tanaka

13th European Conference on Applied Superconductivity (EUCAS 2017)

Design and evaluation of datapath for bit-parallel single-flux-quantum microprocessors

Yuki Hatanaka, Yuichi Matsui, Masamitsu Tanaka, Kyosuke Sano, Akira Fujimaki, Koki Ishida, Takatsugu Ono, Koji Inoue

2017 IEICE Society Conference

Yuichi Matsui, Yuki Hatanaka, Masamitsu Tanaka, Kyosuke Sano, Akira Fujimaki, Koki Ishida, Takatsugu Ono, Koji Inoue

2017 IEICE Society Conference

Towards to ultra high-speed single-flux-quantum computing International conference

Koji Inoue, Masamitsu Tanaka

Arm Research Summit 2017

Evaluation of characteristics of nano-cryotrons based on NbTiN thin films

Masato Suzuki, Kyohei Maruyama, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki, Masumi Inoue

The 78th Japan Society of Applied Physics Autumn Meeting

Development of superconducting rectifiers based on ferromagnets for superconducting digital circuits

Soya Taniguchi, Tomohiro Kamiya, Hayato Iwashita, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

The 78th Japan Society of Applied Physics Autumn Meeting

Thickness dependence of resistivity in NbN thin films

Yoshito Sakakibara, Kyosuke Sano, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

The 78th Japan Society of Applied Physics Autumn Meeting

Demonstration of 4-input lookup table based on single-flux-quantum circuits with ferromagnets

Hayato Iwashita, Soya Taniguchi, Masamitsu Tanaka, Akira Fujimaki

The 78th Japan Society of Applied Physics Autumn Meeting

Study on the thermally-assisted nanostructure device model including the heat diffusion effect

Kyosuke Sano, Masato Suzuki, Kyohei Maruyama, Masamitsu Tanaka, Akira Fujimaki, Masumi Inoue

The 78th Japan Society of Applied Physics Autumn Meeting

Fabrication and evaluation of superconducting thermally-assisted nano-structured transistors using NbTiN thin films

Kyosuke Sano, Masato Suzuki, Kyohei Maruyama, Masamitsu Tanaka, Akira Fujimaki

Superconducting rectifiers based on residual magnetization of ferromagnetic patterns

Soya Taniguchi, Hayato Iwashita, Kyosuke Sano, Masamitsu Tanaka, Akira Fujimaki

Monolithic image sensor chips with highly sensitive single-flux-quantum readout circuits International conference

Akira Fujimaki, Kyohei Kamiya, Hayato Iwashita, Masamitsu Tanaka, Ali Bozbey

16th International Superconductive Electronics Conference (ISEC 2017)

High-throughput bit-parallel arithmetic logic unit using rapid single-flux-quantum logic International conference

Masamitsu Tanaka, Ryo Sato, Yuki Hatanaka, Yuichi Matsui, Hiroyuki Akaike, Akira Fujimaki, Koki Ishida, Takatsugu Ono, Koji Inoue

16th International Superconductive Electronics Conference (ISEC 2017)

Impact of recent advancement in cryogenic circuit technology Invited International conference

Akira Fujimaki, Masamitsu Tanaka

16th International Superconductive Electronics Conference (ISEC 2017)

Demonstration of a compact look-up table based on superconducting phase shift elements using ferromagnetic patterns International conference

Soya Taniguchi, Hiroshi Ito, Takuya Kurihara, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

16th International Superconductive Electronics Conference (ISEC 2017)

Fabrication of thermally-assisted nanostructured devices using NbTiN thin films

Masamitsu Tanaka, Masato Suzuki, Kyohei Maruyama, Kyosuke Sano, Hiroyuki Akaike, Akira Fujimaki

94th Cryogenics and Superconductivity Society of Japan Conference (2017 Spring)

Bit-parallel arithmetic logical unit for 50-GHz operation using single flux quantum

Ryo Sato, Yuki Hatanaka, Yuichi Matsui, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki, Koji Inoue

2017 IEICE General Conference

Narrowed superconductor passive transmission lines with the advanced process

Yuki Hatanaka, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

2017 IEICE General Conference

High-speed demonstration of look-up table based on SFQ circuit with ferromagnets

Soya Taniguchi, Hiroshi Ito, Takuya Kurihara, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

The 64th Japan Society of Applied Physics Spring Meeting

Preparation of nano-structure cmos driver based on NbTiN thin films

Masato Suzuki, Kohei Maruyama, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

The 64th Japan Society of Applied Physics Spring Meeting

Evaluation of readout circuits in superconducting strip line detector

Hayato Iwashita, Kyohei Kamiya, Masamitsu Tanaka, Ali Bozbey, Hiroyuki Akaike, Akira Fujimaki

The 64th Japan Society of Applied Physics Spring Meeting

Evaluation of high-frequency operation of single-flux-quantum microprocessor with minimal instruction set architecture for executing programs, CORE e2

Ryo Sato, Masamitsu Tanaka, Yuki Hatanaka, Hiroyuki Akaike, Akira Fujimaki, Kazuyoshi Takagi, Naofumi Takagi

The 64th Japan Society of Applied Physics Spring Meeting

Demonstration of stored program computing in a 50-GHz SFQ microprocessor with embedded memories International conference

Akira Fujimaki, Ryo Sato, Yuki Hatanaka, Hiroyuki Akaike, Kazuyoshi Takagi, Takagi Naofumi, Masamitsu Tanaka

10th Superconducting SFQ VLSI Workshop (SSV 2017)

Fabrication of nano-structure transistor based on NbTiN thin films for driving CMOS International conference

Masato Suzuki, Kohei Maruyama, Masamitsu Tanaka, Hiroyuki Akaike

10th Superconducting SFQ VLSI Workshop (SSV 2017)

Evaluation of a SFQ look-up table based on superconducting phase shift elements for reconfigurable circuits International conference

Soya Taniguchi, Hiroshi Ito, Takuya Kurihara, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

10th Superconducting SFQ VLSI Workshop (SSV 2017)

Detection sensitivity of single-flux-quantum readout circuits for superconducting strip line detectors International conference

Hayato Iwashita, Kyohei Kamiya, Masamitsu Tanaka, Ali Bozbey, Hiroyuki Akaike, Akira Fujimaki

10th Superconducting SFQ VLSI Workshop (SSV 2017)

Logic design of a single-flux-quantum gate-level-pipelined microprocessor Invited International conference

Koki Ishida, Masamitsu Tanaka, Takatsugu Ono, Koji Inoue

10th Superconducting SFQ VLSI Workshop (SSV 2017)

Interface circuits for high-impedance superconductor passive transmission lines International conference

Yuki Hatanaka, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

10th Superconducting SFQ VLSI Workshop (SSV 2017)

Design of arithmetic logic ALU toward single-flux-quantum gate- level-pipelined microprocessor International conference

Masamitsu Tanaka, Ryo Sato, Yuki Hatanaka, Yuichi Matsui, Hiroyuki Akaike, Akira Fujimaki, Koki Ishida, Takatsugu Ono, Koji Inoue

10th Superconducting SFQ VLSI Workshop (SSV 2017)

Energy-efficient, high-performance microprocessors based on single-flux-quantum logic Invited International conference

Masamitsu Tanaka, Ryo Sato, Yuki Hatanaka, Yuki Ando, Takahiro Kawaguchi, Koki Ishida, Akira Fujimaki, Kazuyoshi Takagi, Naofumi Takagi, Takatsugu Ono, Koji Inoue

29th International Symposium on Superconductivity (ISS 2016)

Implementation of a look-up table based on phase shift elements and dual-rail SFQ circuits International conference

Soya Taniguchi, Hiroshi Ito, Takuya Kurihara, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

29th International Symposium on Superconductivity (ISS 2016)

Shift-register-based single-flux-quantum cache memory architecture

Koki Ishida, Masamitsu Tanaka, Takatsugu Ono, Koji Inoue

Design Gaia 2016 —New Field of VLSI Design—

Demonstration of position-identifying SFQ circuits with two dimensional superconducting strip line detector arrays International conference

Akira Fujimaki, Kyohei Kamiya, Misaki Kozaka, Ryosuke Naito, Masamitsu Tanaka, Hiroyuki Akaike

3rd International Workshop on Superconducting Sensors and Detectors (IWSSD 2016)

Eight-bit bit-serial stored-program computer prototype based on rapid single-flux-quantum logic Invited International conference

Ryo Sato, Yuki Hatanaka, Yuki Ando, Takahiro Kawaguchi, Masamitsu Tanaka, Akira Fujimaki, Kazuyoshi Takagi, Naofumi Takagi

1st Asian ICMC and CSSJ 50th Anniversary Conference

Investigation on cryogenic systems for superconductor digital electronics International conference

Akira Fujimaki, Masato Suzuki, Yuki Ito, Hiroyuki Akaike, Masamitsu Tanaka

1st Asian ICMC and CSSJ 50th Anniversary Conference

Development of image sensing system with 2-dimensional serially connected superconducting strip line detectors array

Kyohei Kamiya, Misaki Kozaka, Ryosuke Naito, Masamitsu Tanaka, Ali Bozbey, Hiroyuki Akaike, Akira Fujimaki

Technical Committee on Superconductive Electronics, IEICE

Single-flux-quantum cache memory architecture International conference

Koki Ishida, Masamitsu Tanaka, Takatsugu Ono, Koji Inoue

13th International SoC Design Conference (ISOCC 2016)

Implementation and evaluation of single-flux-quantum microprocessor with minimal instruction set architecture for executing programs

Ryo Sato, Masamitsu Tanaka, Yuki Hatanaka, Hiroyuki Akaike, Akira Fujimaki, Kazuyoshi Takagi, Naofumi Takagi

2016 IEICE Society Conference

Development of Superconductor Strip Line Detector Array and Single-Flux-Quantum Readout Circuits toward One-Megapixel Neutron Imaging

Akira Fujimaki, Kyohei Kamiya, Ryosuke Naito, Misaki Kozaka, Masamitsu Tanaka, Hiroyuki Akaike

2016 IEICE Society Conference

Energy-efficient rapid single quantum circuit using unshunted junctions

Yuki Hatanaka, Ryo Sato, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

2016 IEICE Society Conference

Fabrication of π Josephson junctions with PdNi/AlOx barrier layer

Hiroshi Ito, Soya Taniguchi, Takuya Kurihara, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

The 77th Japan Society of Applied Physics Autumn Meeting

Evaluation of a look-up table based on dual-rail SFQ circuit using ferromagnets

Soya Taniguchi, Hiroshi Ito, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

The 77th Japan Society of Applied Physics Autumn Meeting

Effects of HfOx formation method on electrical characteristics of NbTiN junctions

Kentaro Munemoto, Yoshito Sakakibara, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

The 77th Japan Society of Applied Physics Autumn Meeting

Preparation of nano-structure transistors based on NbTiN thin films

Masato Suzuki, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

The 77th Japan Society of Applied Physics Autumn Meeting

Investigation on the individual configuration method of superconducting phase shift elements made of ferromagnetic patterns International conference

Soya Taniguchi, Hiroshi Ito, Kota Ishikawa, Sota Kurokawa, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

2016 Applied Superconductivity Conference (ASC 2016)

Josephson-CMOS hybrid memory with nanocryotrons International conference

Akira Fujimaki, Yuki Ito, Masato Suzuki, Masamitsu Tanaka, Gen Konno, Nobuyuki Yoshikawa

2016 Applied Superconductivity Conference (ASC 2016)

Demonstration of 4×4 superconductor matrix image sensors integrated with single-flux-quantum digital signal processors International conference

Akira Fujimaki, Misaki Kozaka, Kyohei Kamiya, Ryosuke Naito, Mutsuo Hidaka, Takekazu Ishida, Masamitsu Tanaka

2016 Applied Superconductivity Conference (ASC 2016)

High-speed operation of random-access-memory-embedded microprocessors based on rapid single-flux- quantum logic Invited International conference

Akira Fujimaki, Ryo Sato, Yuki Hatanaka, Yuki Ando, Masamitsu Tanaka, Kazuyoshi Takagi, Naofumi Takagi

2016 Applied Superconductivity Conference (ASC 2016)

Operation of adiabatic quantum flux parametron logic circuits based on π phase shift elements with ferromagnetic material International conference

Hiroshi Ito, Soya Taniguchi, Sota Kurokawa, Kota Ishikawa, Takuya Kurihara, Masamitsu Tanaka, Hiroyuki Akaike, Akira Fujimaki

2016 Applied Superconductivity Conference (ASC 2016)

Suppression of heat inflow and Joule heat in closed cycle refrigerator test system with broad band inputs and outputs International conference

Akira Fujimaki, Yuki Ito, Masato Suzuki, Masamitsu Tanaka

2016 Applied Superconductivity Conference (ASC 2016)

Single-flux-quantum readout and digital signal processing of serially-connected superconducting stripline detection array

Ryosuke Naito, Kyohei Kamiya, Misaki Kozaka, Masamitsu Tanaka, Akira Fujimaki

単一磁束量子回路を用いたマイクロプロセッサの論理設計と評価

石田浩貴, 田中雅光, 小野貴継, 井上弘士

LSIとシステムのワークショップ2016

Demonstration of low-voltage rapid single flux quantum circuit using unshunted Josephson junctions

Yuki Hatanaka, Ryo Sato, Masamitsu Tanaka, Akira Fujimaki

Technical Committee on Superconductive Electronics, IEICE

On-chip implementation of random-access-memory and RSFQ microprocessor with high-functionality

Ryo Sato, Yuki Ando, Masamitsu Tanaka, Akira Fujimaki, Kazuyoshi Takagi, Naofumi Takagi

Technical Committee on Superconductive Electronics, IEICE

Demonstration of Individual Readout of Serially-Connected Superconducting Strip Line Detectors International conference

Kyohei Kamiya, Yuma Kita, Misaki Kozaka, Masamitsu Tanaka, Ali Bozbey, and Akira Fujimaki