Publications

Filter by Type: 1 = Conference paper, 2 = Journal article

Wenhui Luo, Olivia Chen, Nobuyuki Yoshikawa, Naoki Takeuchi (2025). True stochastic number generator using adiabatic quantum-flux-parametron logic. Superconductor Science and Technology.

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Zhengang Li, Hongwu Peng, Xuan Shen, Masoud Zabihi, Xi Xie, Geng Yuan, Yanzhi Wang, Olivia Chen, Caiwen Ding (2025). Graph Convolutional Network Acceleration Using Adiabatic Superconductor Josephson Devices. Proceedings of the 39th ACM International Conference on Supercomputing.

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Johannes a Delport, Olivia Chen (2025). Electrostatic Gate-Tunable Josephson Junctions in JoSIM: Modeling, Simulation, and I--V Characterization. IEEE Transactions on Applied Superconductivity.

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Mengmeng Wang, Olivia Chen, Nobuyuki Yoshikawa (2025). Design and Implementation of Energy-Efficient Majority-Logic-Based Approximate Adders Using Adiabatic Quantum-Flux-Parametron Technology. IEICE Transactions on Electronics.

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Guangxian Zhu, Yirong Kan, Renyuan Zhang, Yasuhiko Nakashima, Wenhui Luo, Naoki Takeuchi, Nobuyuki Yoshikawa, Olivia Chen (2024). SuperSIM: a comprehensive benchmarking framework for neural networks using superconductor Josephson devices. Superconductor Science and Technology.

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Yanyue Xie, Peiyan Dong, Geng Yuan, Zhengang Li, Masoud Zabihi, Chao Wu, Sung-en Chang, Xufeng Zhang, Xue Lin, Caiwen Ding, Others (2024). SuperFlow: A Fully-Customized RTL-to-GDS Design Automation Flow for Adiabatic Quantum-Flux-Parametron Superconducting Circuits. 2024 Design, Automation & Test in Europe Conference & Exhibition (DATE).

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Zhengang Li, Geng Yuan, Yanyue Xie, Peiyan Dong, Masoud Zabihi, Yanzhi Wang, Nobuyuki Yoshikawa, Devesh Tiwari, Olivia Chen (2024). SupeRBNN: A Randomized Binary Neural Network Using Adiabatic Superconductor Josephson Devices. 2024 IEEE 40th International Conference on Computer Design (ICCD).

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Zhengang Li, Xuan Shen, Geng Yuan, Masoud Zabihi, Tomoharu Yamauchi, Yanzhi Wang, Olivia Chen (2024). Late Breaking Result: AQFP-aware Binary Neural Network Architecture Search. Proceedings of the 61st ACM/IEEE Design Automation Conference.

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Tomoharu Yamauchi, Naoki Takeuchi, Nobuyuki Yoshikawa, Hao San, Olivia Chen (2024). Dual-mode neuron design with deterministic and non-deterministic operations using adiabatic superconductor devices. Superconductor Science and Technology.

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Rongliang Fu, Mengmeng Wang, Yirong Kan, Olivia Chen, Nobuyuki Yoshikawa, Bei Yu, Tsung-Yi Ho (2024). Buffer and Splitter Insertion for Adiabatic Quantum-Flux-Parametron Circuits. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems.

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Zhengang Li, Geng Yuan, Tomoharu Yamauchi, Zabihi Masoud, Yanyue Xie, Peiyan Dong, Xulong Tang, Nobuyuki Yoshikawa, Devesh Tiwari, Yanzhi Wang, Others (2023). SupeRBNN: Randomized binary neural network using adiabatic superconductor Josephson devices. Proceedings of the 56th Annual IEEE/ACM International Symposium on Microarchitecture.

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Wenhui Luo, Olivia Chen, Nobuyuki Yoshikawa, Naoki Takeuchi (2023). Sigmoid function generator using stochastic adiabatic superconductor logic. Applied Physics Letters.

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Coenrad J Fourie, Kyle Jackman, Johannes Delport, Lieze Schindler, Tessa Hall, Pascal Febvre, Lucas Iwanikow, Olivia Chen, Christopher L Ayala, Nobuyuki Yoshikawa, Others (2023). Results from the ColdFlux superconductor integrated circuit design tool project. IEEE Transactions on Applied Superconductivity.

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Olivia Chen, Zhengang Li, Tomoharu Yamauchi, Yanzhi Wang, Nobuyuki Yoshikawa (2023). Performance assessment of an extremely energy-efficient binary neural network using adiabatic superconductor devices. 2023 IEEE 5th International Conference on Artificial Intelligence Circuits and Systems (AICAS).

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Mengmeng Wang, Olivia Chen, Nobuyuki Yoshikawa (2023). Majority-Logic-Based Approximate Adders Using Adiabatic Quantum-Flux-Parametron. IEICE Technical Report; IEICE Tech. Rep..

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Olivia Chen, Renyuan Zhang, Wenhui Luo, Yanzhi Wang, Nobuyuki Yoshikawa (2023). Extremely energy-efficient non-linear function approximation framework using stochastic superconductor devices. IEEE Transactions on Emerging Topics in Computing.

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Rongliang Fu, Olivia Chen, Nobuyuki Yoshikawa, Tsung-Yi Ho (2023). Exact logic synthesis for reversible quantum-flux-parametron logic. 2023 IEEE/ACM International Conference on Computer Aided Design (ICCAD).

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Rongliang Fu, Olivia Chen, Bei Yu, Nobuyuki Yoshikawa, Tsung-Yi Ho (2023). DLPlace: A delay-line clocking-based placement framework for AQFP circuits. 2023 IEEE/ACM International Conference on Computer Aided Design (ICCAD).

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Tomoharu Yamauchi, Hao San, Nobuyuki Yoshikawa, Olivia Chen (2023). Design and Implementation of Power Consumption Reduction Binary Neural Networks Using Adiabatic Quantum-Flux-Parametron Logic. IEICE Technical Report; IEICE Tech. Rep..

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Olivia Chen, Yanzhi Wang, Fei Ke, Nobuyuki Yoshikawa (2023). Design and Implementation of an FFT-Based Neural Network Accelerator Using Rapid Single-Flux-Quantum Technology. 2023 21st IEEE Interregional NEWCAS Conference (NEWCAS).

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Rongliang Fu, Junying Huang, Mengmeng Wang, Yoshikawa Nobuyuki, Bei Yu, Tsung-Yi Ho, Olivia Chen (2023). BOMIG: A majority logic synthesis framework for AQFP logic. 2023 Design, Automation & Test in Europe Conference & Exhibition (DATE).

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Zhengang Li, Yanyue Xie, Peiyan Dong, Olivia Chen, Yanzhi Wang (2023). Algorithm-software-hardware co-design for deep learning acceleration. 2023 60th ACM/IEEE Design Automation Conference (DAC).

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Mengmeng Wang, Olivia Chen, Nobuyuki Yoshikawa (2023). A Study on the Neural Network Processing Units Using Adiabatic Quantum-Flux-Parametron Superconducting Technology. IEICE Conferences Archives.

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Masoud Zabihi, Yanyue Xie, Zhengang Li, Peiyan Dong, Geng Yuan, Olivia Chen, Massoud Pedram, Yanzhi Wang (2023). A Life-Cycle Energy and Inventory Analysis of Adiabatic Quantum-Flux-Parametron Circuits. arXiv preprint arXiv:2307.12216.

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Rongliang Fu, Mengmeng Wang, Yirong Kan, Nobuyuki Yoshikawa, Tsung-Yi Ho, Olivia Chen (2023). A global optimization algorithm for buffer and splitter insertion in adiabatic quantum-flux-parametron circuits. Proceedings of the 28th Asia and South Pacific Design Automation Conference.

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Peiyan Dong, Yanyue Xie, Hongjia Li, Mengshu Sun, Olivia Chen, Nobuyuki Yoshikawa, Yanzhi Wang (2022). TAAS. Proceedings of the 59th ACM/IEEE Design Automation Conference.

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Wenhui Luo, Olivia Chen, Nobuyuki Yoshikawa, Naoki Takeuchi (2022). Scalable true random number generator using adiabatic superconductor logic. Scientific reports.

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Olivia Chen, Yanzhi Wang, Renyuan Zhang, Nobuyuki Yoshikawa (2022). Design and implementation of stochastic neural networks using superconductor Quantum-Flux-Parametron devices. 2022 IEEE 35th International System-on-Chip Conference (SOCC).

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Tomoharu Yamauchi, Hao San, Nobuyuki Yoshikawa, Olivia Chen (2022). A study on the efficient design of adders using adiabatic quantum-flux-parametron circuits. 2022 IEEE 11th Global Conference on Consumer Electronics (GCCE).

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Mengmeng Wang, Olivia Chen, Nobuyuki Yoshikawa (2022). A Neural Network Processing Unit Using Adiabatic Quantum-Flux-Parametron Superconducting Technology. 2022 IEEE 11th Global Conference on Consumer Electronics (GCCE).

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Hongjia Li, Mengshu Sun, Tianyun Zhang, Olivia Chen, Nobuyuki Yoshikawa, Bei Yu, Yanzhi Wang, Yibo Lin (2021). Towards aqfp-capable physical design automation. 2021 Design, Automation & Test in Europe Conference & Exhibition (DATE).

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Wenhui Luo, Naoki Takeuchi, Olivia Chen, Nobuyuki Yoshikawa (2021). Low-autocorrelation random number generator based on adiabatic quantum-flux-parametron logic. IEEE Transactions on Applied Superconductivity.

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Ro Saito, Christopher L Ayala, Olivia Chen, Tomoyuki Tanaka, Tomohiro Tamura, Nobuyuki Yoshikawa (2021). Logic synthesis of sequential logic circuits for adiabatic quantum-flux-parametron logic. IEEE Transactions on Applied Superconductivity.

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Wenhui Luo, Naoki Takeuchi, Olivia Chen, Nobuyuki Yoshikawa (2021). Design and Evaluation of Random Number Generators Based on Non-Adiabatic Quantum-Flux-Parametron Gates. IEICE Technical Report; IEICE Tech. Rep..

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Fei Ke, Olivia Chen, Yanzhi Wang, Nobuyuki Yoshikawa (2021). Demonstration of a 47.8 GHz high-speed FFT processor using single-flux-quantum technology. IEEE Transactions on Applied Superconductivity.

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Ro Saito, Christopher L Ayala, Olivia Chen, Tomoyuki Tanaka, Tomohiro Tamura, Nobuyuki Yoshikawa (2020). 超伝導エレクトロニクス. 電子情報通信学会技術研究報告= IEICE technical report: 信学技報.

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Wenhui Luo, Naoki Takeuchi, Olivia Chen, Nobuyuki Yoshikawa (2020). 超伝導エレクトロニクス. 電子情報通信学会技術研究報告= IEICE technical report: 信学技報.

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Ro Saito, Christopher L Ayala, Olivia Chen, Tomoyuki Tanaka, Tomohiro Tamura, Nobuyuki Yoshikawa (2020). Methodology for Automating Data Feedback Circuit Synthesis for a 4-bit Counter in Adiabatic Quantum-Flux-Parametron Logic. IEICE Technical Report; IEICE Tech. Rep..

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陳オリビア (2020). Improvement for autocorrelation of adiabatic quantum-flux-parametron based random number generator. IEICE Technical Report.

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Fei Ke, Ao Ren, Yanzhi Wang, Olivia Chen, Nobuyuki Yoshikawa Yuki Yamanashi (2020). Design of an SFQ convolutional computation processor for convolutional neural network. 電子情報通信学会技術研究報告= IEICE technical report: 信学技報.

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LUO Wenhui, Naoki Takeuchi, Olivia Chen, Nobuyuki Yoshikawa (2020). Design and Evaluation of a 1-bit Random Number Generator using Adiabatic Quantum-flux-parametron Logic. 電子情報通信学会技術研究報告= IEICE technical report: 信学技報.

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Yi-Chen Chang, Hongjia Li, Olivia Chenht, Yanzhi Wang, Nobuyuki Yoshikawa, Tsung-Yi Ho (2020). ASAP: An analytical strategy for AQFP placement. Proceedings of the 39th International Conference on Computer-Aided Design.

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Christopher L Ayala, Ro Saito, Tomoyuki Tanaka, Olivia Chen, Naoki Takeuchi, Yuxing He, Nobuyuki Yoshikawa (2020). A semi-custom design methodology and environment for implementing superconductor adiabatic quantum-flux-parametron microprocessors. Superconductor Science and Technology.

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Ruizhe Cai, Xiaolong Ma, Olivia Chen, Ao Ren, Ning Liu, Nobuyuki Yoshikawa, Yanzhi Wang (2019). IDE development, logic synthesis and buffer/splitter insertion framework for adiabatic quantum-flux-parametron superconducting circuits. 2019 IEEE Computer Society Annual Symposium on VLSI (ISVLSI).

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Tomoyuki Tanaka, Christopher L Ayala, Qiuyun Xu, Ro Saito, Nobuyuki Yoshikawa (2019). Fabrication of adiabatic quantum-flux-parametron integrated circuits using an automatic placement tool based on genetic algorithms. IEEE Transactions on Applied Superconductivity.

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Ro Saito, Christopher AYALA, Olivia Chen, Tomoyuki Tanaka, Nobuyuki Yoshikawa (2019). Development of Topdown Environment for Adiabatic Quantum Flux Parametron Circuits. 電気学会研究会資料.

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Olivia Chen, Ro Saito, Tomoyuki Tanaka, Christopher L Ayala, Naoki Takeuchi, Nobuyuki Yoshikawa (2019). Design of adiabatic quantum-flux-parametron register files using a top-down design flow. IEEE Transactions on Applied Superconductivity.

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Coenrad Johann Fourie, Kyle Jackman, Matthys M Botha, Sasan Razmkhah, Pascal Febvre, Christopher Lawrence Ayala, Qiuyun Xu, Nobuyuki Yoshikawa, Erin Patrick, Mark Law, Others (2019). ColdFlux superconducting EDA and TCAD tools project: Overview and progress. IEEE Transactions on Applied Superconductivity.

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Christopher L Ayala, Olivia Chen, Nobuyuki Yoshikawa (2019). AQFPTX: Adiabatic quantum-flux-parametron timing eXtraction tool. 2019 IEEE International Superconductive Electronics Conference (ISEC).

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Tomoyuki Tanaka, Christopher L Ayala, Olivia Chen, Ro Saito, Nobuyuki Yoshikawa (2019). Analysis of Malfunction of an Adiabatic Quantum Flux Parametron 16-bit Kogge Stone Adder. IEICE Technical Report; IEICE Tech. Rep..

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Olivia Chen, Ruizhe Cai, Yanzhi Wang, Fei Ke, Taiki Yamae, Ro Saito, Naoki Takeuchi, Nobuyuki Yoshikawa (2019). Adiabatic quantum-flux-parametron: Towards building extremely energy-efficient circuits and systems. Scientific reports.

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Olivia Chen, Ruizhe Cai, Yanzhi Wang, Naoki Takeuchi, Nobuyuki Yoshikawa (2019). A Study on Majority Synthesis for Adiabatic Superconducting Logic. IEICE Technical Report; IEICE Tech. Rep..

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Ruizhe Cai, Ao Ren, Olivia Chen, Ning Liu, Caiwen Ding, Xuehai Qian, Jie Han, Wenhui Luo, Nobuyuki Yoshikawa, Yanzhi Wang (2019). A stochastic-computing based deep learning framework using adiabatic quantum-flux-parametron superconducting technology. Proceedings of the 46th International Symposium on Computer Architecture.

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Ruizhe Cai, Olivia Chen, Ao Ren, Ning Liu, Caiwen Ding, Nobuyuki Yoshikawa, Yanzhi Wang (2019). A majority logic synthesis framework for adiabatic quantum-flux-parametron superconducting circuits. Proceedings of the 2019 Great Lakes Symposium on VLSI.

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Naoki Takeuchi, Christopher Lawrence Ayala, Olivia Chen, Nobuyuki Yoshikawa (2019). A feedback-friendly large-scale clocking scheme for adiabatic quantum-flux-parametron logic datapaths. IEEE Transactions on Applied Superconductivity.

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Ruizhe Cai, Olivia Chen, Ao Ren, Ning Liu, Nobuyuki Yoshikawa, Yanzhi Wang (2019). A buffer and splitter insertion framework for adiabatic quantum-flux-parametron superconducting circuits. 2019 IEEE 37th International Conference on Computer Design (ICCD).

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Christopher AYALA, Olivia Chen, Naoki Takeuchi, Yuki Yamanashi, Nobuyuki Yoshikawa (2018). Investigation of Multi-Phase Timing Windows for Adiabatic Quantum-Flux-Parametron Logic. 電子情報通信学会技術研究報告= IEICE technical report: 信学技報.

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Qiuyun Xu, Yanzhi Wang, Naoki Takeuchi, Nobuyuki Yoshikawa (2018). Design and Evaluation of Deep Learning Accelerators Using Superconductor Logic Families. IEICE Conferences Archives.

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Christopher L Ayala, Olivia Chen, Nobuyuki Yoshikawa (2018). Comprehensive Automated Timing Extraction Methodology for Characterizing an Adiabatic Quantum-Flux-Parametron Logic Cell Library. IEICE Conferences Archives.

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Qiuyun Xu, Christopher L Ayala, Naoki Takeuchi, Yuki Murai, Yuki Yamanashi, Nobuyuki Yoshikawa (2017). Synthesis flow for cell-based adiabatic quantum-flux-parametron structural circuit generation with HDL back-end verification. IEEE Transactions on Applied Superconductivity.

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Nobuyuki Yoshikawa, N Takeuchi, CL Ayala, Q Xu, K Fang, N Tsuji, F China, Y Murai, T Ortlepp, Y Yamanashi (2017). Recent research developments of adiabatic quantum-flux-parametron circuitstechnology toward energy-efficient highperformance computing.

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Qiuyun Xu, Christopher L Ayala, Yuki Murai, Naoki Takeuchi, Yuki Yamanashi, Nobuyuki Yoshikawa (2016). Synthesis Flow for Cell-Based Adiabatic Quantum-Flux-Parametron Logic Circuit Generation. IEICE Conferences Archives.

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Christopher L Ayala, Qiuyun Xu, Yuki Murai, Ro Saito, Naoki Takeuchi, Yuki Yamanashi, Thomas Ortlepp, Nobuyuki Yoshikawa (2016). Recent Progress on the Development of EDA Tools for Adiabatic Quantum-Flux-Parametron VLSI Circuits. IEICE Conferences Archives.

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Qiuyun Xu, Christopher L Ayala, Naoki Takeuchi (2016). HDL-based Modeling Approach for Adiabatic Superconductor Logic Simulation. 電子情報通信学会技術研究報告= IEICE technical report: 信学技報.

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Xu Qiuyun, L Ayala Christopher, Takeuchi Naoki, Yamanashi Yuki, Yoshikawa Nobuyuki (2016). C-8-12 HDL-based Modeling Approach for Digital Simulation of Adiabatic Quantum Parametron Logic. 電子情報通信学会総合大会講演論文集.

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Christopher L Ayala, Naoki Takeuchi, Qiuyun Xu (2015). Timing extraction for logic simulation of VLSI adiabatic quantum-flux-parametron circuits. 電子情報通信学会技術研究報告= IEICE technical report: 信学技報.

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Xu Qiuyun, Christopher L Ayala, Naoki Takeuchi (2015). Design of an Extremely Energy-Efficient Hardware Algorithm Using Adiabatic Superconductor Logic and Its Digital Modeling Approach. 電子情報通信学会技術研究報告= IEICE technical report: 信学技報.

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Q Xu, Y Yamanashi, CL Ayala, N Takeuchi, T Ortlepp, N Yoshikawa (2015). Design of an extremely energy-efficient hardware algorithm using adiabatic superconductor logic. 2015 15th International Superconductive Electronics Conference (ISEC).

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Christopher L Ayala, Naoki Takeuchi, Qiuyun Xu, Yuki Murai, Yuki Yamanashi, Thomas Ortlepp, Nobuyuki Yoshikawa (2015). 15p-4B-2.

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Xizhu Peng, Qiuyun Xu, Taichi Kato, Yuki Yamanashi, Nobuyuki Yoshikawa, Akira Fujimaki, Naofumi Takagi, Kazuyoshi Takagi, Mutsuo Hidaka (2014). High-speed demonstration of bit-serial floating-point adders and multipliers using single-flux-quantum circuits. IEEE Transactions on Applied Superconductivity.

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Qiuyun Xu, Xizhu Peng, Thomas Ortlepp, Yuki Yamanashi, Nobuyuki Yoshikawa (2014). Demonstration of bit-serial sfq-based computing for integer iteration algorithms. IEEE Transactions on Applied Superconductivity.

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Xu Qiuyun, Peng Xizhu, Yamanashi Yuki, Yoshikawa Nobuyuki, Ortlepp Thomas (2014). C-8-8 Improvement of Computational Efficiency Collatz Conjecture Processors. 電子情報通信学会ソサイエティ大会講演論文集.

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Xu Qiuyun, Yonezawa Yasuhiro, Yamanashi Yuki, Ito Nobuyuki (2013). C-8-22 Study on Power Dissipation of Collatz Conjecture Processors Based on SFQ circuits. 電子情報通信学会総合大会講演論文集.

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Q Xu, Y Shimamura, Y Yamanashi, N Yoshikawa, T Ortlepp (2013). Analysis of computational energy efficiency in single-flux-quantum electronics by implementing an integer-based hardware-algorithm. 2013 IEEE 14th International Superconductive Electronics Conference (ISEC).

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