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A. Fujimaki · SciRah

Researcher profile · Semantic Scholar

A. Fujimaki

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A. Fujimaki — researcher profile on SciRah

h-index: 32
Works: 431
Citations: 4,322

Most-cited papers

Design and Demonstration of an 8-bit Bit-Serial RSFQ Microprocessor: CORE e4
Yuki Ando, R. Sato, Masamitsu Tanaka, K. Takagi +2 more
2016IEEE transactions on applied superconductivity89 citations
Semantic Scholar
Quasiparticle-mediated spin Hall effect in a superconductor.
T. Wakamura, H. Akaike, Y. Omori, Y. Niimi +4 more
2015Nature Materials84 citations Open access
Semantic Scholar
4-bit Bit-Slice Arithmetic Logic Unit for 32-bit RSFQ Microprocessors
Guang-Ming Tang, Kensuke Takata, Masamitsu Tanaka, A. Fujimaki +2 more
2016IEEE transactions on applied superconductivity63 citations
Semantic Scholar
High-Speed Operation of Random-Access-Memory-Embedded Microprocessor With Minimal Instruction Set Architecture Based on Rapid Single-Flux-Quantum Logic
R. Sato, Yuki Hatanaka, Yuki Ando, Masamitsu Tanaka +3 more
2017IEEE transactions on applied superconductivity50 citations
Semantic Scholar
Josephson-CMOS Hybrid Memory With Nanocryotrons
Masamitsu Tanaka, Masato Suzuki, G. Konno, Yuki Ito +2 more
2017IEEE transactions on applied superconductivity38 citations
Semantic Scholar
29.3 A 48GHz 5.6mW Gate-Level-Pipelined Multiplier Using Single-Flux Quantum Logic
Ikki Nagaoka, Masamitsu Tanaka, Koji Inoue, A. Fujimaki
2019IEEE International Solid-State Circuits Conference34 citations
Semantic Scholar
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 +4 more
20202020 IEEE Symposium on VLSI Circuits32 citations
Semantic Scholar
Energy/Space-Efficient Rapid Single-Flux-Quantum Circuits by Using π-Shifted Josephson Junctions
T. Kamiya, Masamitsu Tanaka, Kyosuke Sano, A. Fujimaki
2018IEICE transactions on electronics32 citations
Semantic Scholar
High-Density Shift-Register-Based Rapid Single-Flux-Quantum Memory System for Bit-Serial Microprocessors
Masamitsu Tanaka, R. Sato, Yuki Hatanaka, A. Fujimaki
2016IEEE transactions on applied superconductivity32 citations
Semantic Scholar
π phase shifter based on NbN-based ferromagnetic Josephson junction on a silicon substrate
T. Yamashita, Sunmi Kim, Haruki Kato, W. Qiu +3 more
2020Scientific Reports31 citations Open access
Semantic Scholar
Low-power high-speed half-flux-quantum circuits driven by low bias voltages
Feng Li, Yuto Takeshita, Daiki Hasegawa, Masamitsu Tanaka +2 more
2020Superconductors Science and Technology31 citations Open access
Semantic Scholar
High-Speed Demonstration of Bit-Serial Floating-Point Adders and Multipliers Using Single-Flux-Quantum Circuits
Xi-Zhu Peng, Qiuyun Xu, Taiichi Kato, Y. Yamanashi +5 more
2015IEEE transactions on applied superconductivity31 citations
Semantic Scholar
64-GHz Datapath Demonstration for Bit-Parallel SFQ Microprocessors Based on a Gate-Level-Pipeline Structure
Ryota Kashima, Ikki Nagaoka, Masamitsu Tanaka, T. Yamashita +1 more
2021IEEE transactions on applied superconductivity29 citations
Semantic Scholar
Neutron detection using a current biased kinetic inductance detector
H. Shishido, S. Miyajima, Y. Narukami, K. Oikawa +6 more
201526 citations
Semantic Scholar
High-Speed Memory Driven by SFQ Pulses Based on 0-π SQUID
Yuto Takeshita, Feng Li, Daiki Hasegawa, Kyosuke Sano +3 more
2021IEEE transactions on applied superconductivity21 citations
Semantic Scholar
Execution of stored programs by a rapid single-flux-quantum random-access-memory-embedded bit-serial microprocessor using 50-GHz clock frequency
Masamitsu Tanaka, R. Sato, A. Fujimaki, K. Takagi +1 more
2023Applied Physics Letters17 citations
Semantic Scholar
Development of Bit-Serial RSFQ Microprocessors Integrated with Shift-Register-Based Random Access Memories
Masamitsu Tanaka, Kensuke Takata, T. Kawaguchi, Yuki Ando +5 more
2015International Symposium on Electronic Commerce14 citations
Semantic Scholar
Relaxation method in description of RAM memory cell in RSFQ computer
K. Pomorski, H. Akaike, A. Fujimaki, K. Rusek
2019Compel13 citations
Semantic Scholar
Neutron flux spectrum revealed by Nb-based current-biased kinetic inductance detector with a 10B conversion layer
S. Miyajima, H. Shishido, Y. Narukami, N. Yoshioka +7 more
201713 citations
Semantic Scholar
Fabrication of superconductor–ferromagnet–insulator–superconductor Josephson junctions with critical current uniformity applicable to integrated circuits
Hiroshi Ito, Soya Taniguchi, Kouta Ishikawa, H. Akaike +1 more
201713 citations Open access
Semantic Scholar
Superconductor digital circuits with π junctions alone
Feng Li, Yuto Takeshita, Masamitsu Tanaka, A. Fujimaki
2023Applied Physics Letters12 citations Open access
Semantic Scholar
Energy efficient half-flux-quantum circuit aiming at milli-kelvin stage operation
Feng Li, D. Pham, Yuto Takeshita, Masayuki Higashi +3 more
2023Superconductors Science and Technology11 citations Open access
Semantic Scholar
Demonstration of an Energy-Efficient, Gate-Level-Pipelined 100 TOPS/W Arithmetic Logic Unit Based on Low-Voltage Rapid Single-Flux-Quantum Logic
Ikki Nagaoka, Masamitsu Tanaka, Kyosuke Sano, T. Yamashita +2 more
2019International Symposium on Electronic Commerce11 citations
Semantic Scholar
Cryogenic ferromagnetic patterns with controlled magnetization for superconducting phase-shift elements
Soya Taniguchi, Hiroshi Ito, Kouta Ishikawa, H. Akaike +1 more
201511 citations
Semantic Scholar
Optimization of Half-Flux-Quantum Circuits Composed of π-Shift and Conventional Josephson Junctions
Shoma Tanemura, Yuto Takeshita, Feng Li, Toranosuke Nakayama +2 more
2023IEEE transactions on applied superconductivity10 citations
Semantic Scholar
Neutron detection using the superconducting Nb-based current-biased kinetic inductance detector
H. Shishido, Hiroyuki Yamaguchi, Yuya Miki, S. Miyajima +7 more
201710 citations Open access
Semantic Scholar
Direct observations of π-leaps of superconducting phase differences in π-junction-based SQUIDs
Yuto Takeshita, Feng Li, Masayuki Higashi, Masamitsu Tanaka +2 more
2023Superconductors Science and Technology9 citations Open access
Semantic Scholar
50-GFLOPS Floating-Point Adder and Multiplier Using Gate-Level-Pipelined Single-Flux-Quantum Logic With Frequency-Increased Clock Distribution
Ikki Nagaoka, Ryota Kashima, Masamitsu Tanaka, Satoshi Kawakami +4 more
2023IEEE transactions on applied superconductivity9 citations
Semantic Scholar
A 57.2GHz 11.2mW 8-bit General Purpose Superconductor Microprocessor with Dual-Clocking Scheme
Ikki Nagaoka, Ryota Kashima, Tomoki Nakano, Masamitsu Tanaka +3 more
2022International Symposium on Security in Computing and Communications9 citations
Semantic Scholar
Weak spin-flip scattering in Pd89Ni11 interlayer of NbN-based ferromagnetic Josephson junctions
D. Pham, Riku Sugimoto, Kenjiro Oba, Yuto Takeshita +4 more
2022Scientific Reports9 citations Open access
Semantic Scholar
Demonstration of a 52-GHz Bit-Parallel Multiplier Using Low-Voltage Rapid Single-Flux-Quantum Logic
Ikki Nagaoka, Koki Ishida, Masamitsu Tanaka, Kyosuke Sano +4 more
2021IEEE transactions on applied superconductivity9 citations
Semantic Scholar
Development of an Optimizer for Vortex Transitional Memory Using Particle Swarm Optimization
M. A. Karamuftuoglu, Seda Demirhan, Yuto Komura, M. E. Çelik +3 more
2016IEEE transactions on applied superconductivity9 citations
Semantic Scholar
Demonstration of Interface Circuits Between Half- and Single- Flux- Quantum Circuits
Daiki Hasegawa, Yuto Takeshita, Feng Li, Kyosuke Sano +3 more
2021IEEE transactions on applied superconductivity7 citations
Semantic Scholar
Investigation of Timing Parameters in Single-Flux-Quantum Circuits Using Low Critical-Current Junctions and Low Bias Voltages
Manami Kuniyoshi, K. Murase, Ikki Nagaoka, Kyosuke Sano +3 more
2021IEEE transactions on applied superconductivity6 citations
Semantic Scholar
Planarized Nb 4-Layer Fabrication Process for Superconducting Integrated Circuits and Its Fabricated Device Evaluation
S. Nagasawa, Masamitsu Tanaka, N. Takeuchi, Y. Yamanashi +12 more
2021IEICE transactions on electronics6 citations
Semantic Scholar
Study on the Force and Potential for the Vortex Motion Around the Concave Film Edge by the Numerical Calculation
M. Inoue, Shota Mizoguchi, A. Fujimaki
2017IEEE transactions on applied superconductivity6 citations
Semantic Scholar
Fabrication of NbTiN/Al–AlNX/NbTiN Josephson Junctions for Superconducting Circuits Operating Around 10 K
H. Akaike, Shunya Sakamoto, K. Munemoto, A. Fujimaki
2016IEEE transactions on applied superconductivity6 citations
Semantic Scholar
Magnetic Josephson Junctions on Nb Four-layer Structure for Half Flux Quantum Circuits
Daiki Hasegawa, Yuto Takeshita, Kyosuke Sano, Masamitsu Tanaka +2 more
2019International Symposium on Electronic Commerce5 citations
Semantic Scholar
Toward Neutron Radiography Using Two Arrays of Nb-Based Current-Biased Kinetic Inductance Detectors With 10B Converter Sandwiched In-Between
T. Ishida, S. Miyajima, Y. Narukami, N. Yoshioka +3 more
2015IEEE transactions on applied superconductivity5 citations
Semantic Scholar
Thermally Assisted Superconductor Transistors for Josephson-CMOS Hybrid Memories
Kyosuke Sano, Masato Suzuki, Kohei Maruyama, Soya Taniguchi +4 more
2018IEICE transactions on electronics4 citations Open access
Semantic Scholar
A High-Throughput Multiply-Accumulate Unit With Long Feedback Loop Using Low-Voltage Rapid Single-Flux Quantum Circuits
Ikki Nagaoka, Ryota Kashima, Koki Ishida, Masamitsu Tanaka +4 more
2023IEEE transactions on applied superconductivity3 citations
Semantic Scholar
Analysis of the Effect of 0-π SQUIDs for Enhancing Mutual Coupling
Masayuki Higashi, Yuto Takeshita, K. Kato, Hinata Fujisawa +4 more
2023IEEE transactions on applied superconductivity3 citations
Semantic Scholar
Fundamental Study on the Nanocryotron Properties by the Numerical Calculation
M. Inoue, Kazuki Izaki, Yukiyoshi Goto, Kyosuke Sano +3 more
2019IEEE transactions on applied superconductivity3 citations
Semantic Scholar
Investigation Into the Individual Configuration of Superconducting Phase Shift Elements Made of Ferromagnetic Patterns for Reconfigurable Circuits
Soya Taniguchi, Hiroshi Ito, Kouta Ishikawa, Sota Kurokawa +3 more
2017IEEE transactions on applied superconductivity3 citations
Semantic Scholar
Vortex Transitional Memory Developed with Nb 4-Layer, 10-kA/cm² Fabrication Process
Yuto Komura, Masamitsu Tanaka, S. Nagasawa, A. Bozbey +1 more
2015International Symposium on Electronic Commerce3 citations
Semantic Scholar
Rapid Single-Flux-Quantum Circuits Fabricated Using Process
Masamitsu Tanaka, Misaki Kozaka, Y. Kita, A. Fujimaki +2 more
20153 citations
Semantic Scholar
Flux transfer circuits breaking conventional limit in transfer coefficient based on a negative inductance of a π-junction
Masayuki Higashi, Feng Li, Masamitsu Tanaka, A. Fujimaki
2024Superconductors Science and Technology2 citations Open access
Semantic Scholar
Lowering Latency in a High-Speed Gate-Level-Pipelined Single Flux Quantum Datapath Using an Interleaved Register File
Ryota Kashima, Ikki Nagaoka, Tomoki Nakano, Masamitsu Tanaka +2 more
2023IEEE transactions on applied superconductivity2 citations
Semantic Scholar
SFQ Parallel Encoders Promising for Video Imaging With Superconductor Stripline Detectors
Masamitsu Tanaka, Misaki Kozaka, Kyohei Kamiya, Kübra Üşenmez +4 more
2021IEEE transactions on applied superconductivity2 citations
Semantic Scholar
Development of an Advanced Circuit Model for Superconducting Strip Line Detector Arrays
A. Bozbey, Y. Kita, Kyohei Kamiya, Misaki Kozaka +3 more
2016IEICE transactions on electronics2 citations Open access
Semantic Scholar

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