Publications

FY 2025:

Journal papers

• Y. Mizugaki, K. Sato, and H. Shimada, "Operation of RSFQ Hardware Random Number Generator Comprising Two Josephson Oscillators," accepted for publication in IEICE Transactions on Electronics, vol. E108-C, no. 6, June, 2025. [link to DOI]
• T. Iizuka, J. Tanarom, Y. Mizugaki, and H. Shimada, "Lateral Phonon Propagation between superconducting devices on a Si/SiO₂ substrate," Journal of Applied Physics, vol. 137, no. 15, 155303 (10 pages), April, 2025. [link to DOI]

FY 2024:

Awards

• Daiki Fukuyo, March 25, 2025 (see Japanese page for detail.)
• Yuki Hayashi, March 25, 2025 (see Japanese page for detail.)
• Daiki Fukuyo, January 14, 2025. (See Japanese page for detail.)
• Yoshinao Mizugaki, IEICE Senior Member, December 16, 2024 (see Japanese page for detail.)

Journal papers

• Y. Mizugaki, K. Sato, and H. Shimada, "Operation of RSFQ Hardware Random Number Generator Comprising Two Josephson Oscillators," accepted for publication in IEICE Transactions on Electronics, vol. E108-C, no. 6, June, 2025. [link to DOI]
• Y. Hayashi, H. Shimada, and Y. Mizugaki, "Information Processing Capabilities of Two Parallel Gold-nanoparticle Reservoirs Dependent on Operation Temperatures," Japanese Journal of Applied Physics, vol. 64, no. 2, 02SP42 (5 pages), February, 2025. [link to DOI]
• S. Hayashi, H. Shimada, Y. Mizugaki, "Microwave generator based on a single-flux-quantum pulse-frequency modulation D/A converter," IEICE Transactions on Electronics (Japanese Edition), vol. J107-C, no. 10, pp. 330-335, October, 2024. [link to DOI]
• K. Kobayashi, H. Shimada, and Y. Mizugaki, "Physical Reservoir Application of Random Network of Gold Nanoparticles Fabricated by Multi-Step Immersion in Gold Colloidal Solution," Japanese Journal of Applied Physics, vol. 63, no. 6, 064501 (6 pages), June, 2024. [link to DOI]

International conferences

• D. Fukuyo, H. Shimada, and Y. Mizugaki, "Design of an RSFQ All-Digital Phase Locked Loop with a Time-to-Digital Converter," 37th International Symposium on Superconductivity (ISS 2024), Kanazawa, December 3–5, 2024. (ED7-4, Dec. 5)
• Y. Mizugaki, S. Hayashi, and H. Shimada, "Design of a microwave generator as an application of an SFQ pulse-frequency modulation digital-to-analog converter," 37th International Symposium on Superconductivity (ISS 2024), Kanazawa, December 3–5, 2024. (ED3-2, Dec. 3)
• Y. Hayashi, H. Shimada, and Y. Mizugaki, "Information processing in Coulomb-blockade-based gold-nanoparticle reservoirs connected in parallel," 37th International Microprocesses and Nanotechnology Conference (MNC 2024), Kyoto, November 12–15, 2024. (14P-1-36, Nov. 14)
• Y. Mizugaki, S. Hayashi, and H. Shimada, "Microwave Generator Designed Based on Direct Digital Synthesis with SFQ Pulse-Frequency Modulation D/A Converter," 17th Superconducting SFQ VLSI Workshop (SSV 2024), Nagoya, October 11–12, 2024. (O-5, Oct. 11)

Domestic conferences

• S. Komazawa, Y. Hayashi, H. Shimada, and Y. Mizugaki, Mar. 14, 2025. (See Japanese page for detail.)
• Y. Iinuma, Y. Hayashi, H. Shimada, and Y. Mizugaki, Feb. 28, 2025. (See Japanese page for detail.)
• D. Fukuyo, H. Shimada, and Y. Mizugaki, Jan. 14, 2025. (invited) (See Japanese page for detail.)
• Y. Shioda, T. Iizuka, Y. Mizugaki, and H. Shimada, Sep. 17, 2024. (See Japanese page for detail.)
• T. Iizuka, Y. Mizugaki, and H. Shimada, Sep. 19, 2024. (See Japanese page for detail.)
• Y. Hayashi, K. Kobayashi, H. Shimada, and Y. Mizugaki, Sep. 16, 2024. (See Japanese page for detail.)
• K. Kobayashi, Y. Hayashi, H. Shimada, and Y. Mizugaki, Sep. 16, 2024. (See Japanese page for detail.)
• D. Fukuyo, H. Shimada, and Y. Mizugaki, Sep. 12, 2024. (See Japanese page for detail.)

FY 2023:

Awards

• Seiya Hayashi, March 25, 2024 (see Japanese page for detail.)

Journal papers

• Y. Mizugaki, "Superconducting D/A Converters Generating Quantum Voltage Defined by the Reference Microwave Frequency and the AC Josephson Effect," TEION KOGAKU (J. Cryo. Super. Soc. Jpn.) vol. 59, no. 2, pp. 80-87, March, 2024. [link to DOI]
• K. Watanabe, Y. Mizugaki, S. Moriya, H. Yamamoto, T. Yamashita, and S. Sato, "Numerical Study on Physical Reservoir Computing with Josephson Junctions," IEEE Transactions on Applied Superconductivity, vol. 34, no. 3, 1700204 (4 pages), January, 2024. [link to DOI]
• Y. Mizugaki, K. Fujikura, and H. Shimada, "Nonlinear Signal Conversion in Gold-Nanoparticle Random Array for Physical Reservoir Applications," Japanese Journal of Applied Physics, vol. 63, no.1, 01SP35 (5 pages), January, 2024. [link to DOI]
• Y. Mizugaki, K. Sato, H. Shimada, and T. Onomi, "Random Number Generation Utilizing Timing Jitters of Single-Flux-Quantum Propagation," Proceedings of 2023 PhotonIcs & Electromagnetics Research Symposium (PIERS2023), Prague, pp. 1744–1748, August, 2023. (IEEE Xplore) [link to DOI]
• K. Sato, N. Sega, H. Shimada, Y. Mizugaki, "Evaluation of True Random Number Sequences Generated by Utilizing Timing Jitters in Superconducting Integrated Circuits," Journal of Physics: Conference Series, vol. 2545, 012022 (8 pages), August, 2023. [link to DOI]

International conferences

• Y. Mizugaki, K. Fujikura, and H. Shimada, "Coulomb-Blockade-Based Nonlinear Signal Conversion in Gold-Nanoparticle Random Arrays," 14th International Workshop on Nanostructures & Nanoelectronics (IWNN-14), On-oine, March 5–6, 2024.
• Y. Hayashi, K. Kobayashi, M. Moriya, H. Shimada, and Y. Mizugaki, "Physical reservoir made of gold-nanoparticle random arrays exhibiting nonlinear characteristics due to the Coulomb blockade," 12th RIEC International Symposium on Brain Functions and Brain Computer (BFBC 2024), Sendai, February 27–28, 2024. ([P-17], Feb. 27)
• Y. Mizugaki, "Development of RSFQ digital-to-analog converters generating quantum voltages," 36th International Symposium on Superconductivity (ISS2023), Wellington, New Zealand, November 28-30, 2023. (ED-8-1-INV, invited)
• K. Kobayashi, Y. Hayashi, K. Fujikura, M. Moriya, H. Shimada, and Y. Mizugaki, "Physical Reservoir Application of Random Network of Gold Nanoparticles Fabricated by Multi-Step Immersion in Gold Colloidal Solution," 36th International Microprocesses and Nanotechnology Conference (MNC 2023), Sapporo, November 14–17, 2023. (17P-1-15, Nov. 17)
• K. Watanabe, Y. Mizugaki, S. Moriya, H. Yamamoto, T. Yamashita, and S. Sato, "Numerical study on physical reservoir computing with Josephson junctions," 16th European Conference on Applied Superconductivity (EUCAS2023), Bologna, Italy, September 3–7, 2023. 2-EP-OD-03S (poster, 11:30, Sep. 5)
• Y. Mizugaki, K. Sato, and H. Shimada, "RSFQ Hardware Random Number Generator Comprising Two Josephson Oscillators," 16th European Conference on Applied Superconductivity (EUCAS2023), Bologna, Italy, September 3–7, 2023. 1-EO-SN-04S (oral, 12:35, Sep. 4)
• Y. Mizugaki, K. Sato, H. Shimada, and T. Onomi, "Random Number Generation Utilizing Timing Jitters of Single-Flux-Quantum Propagation," The 44th PhotonIcs and Electromagnetics Research Symposium (PIERS2023), Prague, Czech Republic, July 3–6, 2023. 3P_12-4 (oral, pm, Jul. 5)
• Y. Mizugaki, K. Fujikura, and H. Shimada, "Nonlinear Signal Conversion in Gold-Nanoparticle Random Array for Physical Reservoir Applications," The 9th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO2023), Kanazawa, June 5–8, 2023. J-4 (oral, 10:50, Jun. 8)

Domestic conferences

• Y. Hayashi, K. Kobayashi, M. Moriya, H. Shimada, and Y. Mizugaki, Mar. 23, 2024. (See Japanese page for detail.)
• D. Fukuyo, H. Shimada, and Y. Mizugaki, Mar. 6, 2024. (See Japanese page for detail.)
• S. Hayashi, H. Shimada, and Y. Mizugaki, Jan. 23, 2024. (See Japanese page for detail.)
• Y. Shimada, M. Moriya, H. Shimada, D. Tadaki, A. Hirano-Iwata, and Y. Mizugaki, Dec. 8, 2023. (See Japanese page for detail.)
• T. Iizuka, Y. Mizugaki, and H. Shimada, Sep. 22, 2023. (See Japanese page for detail.)
• S. Hayashi, H. Shimada, and Y. Mizugaki, Sep. 21, 2023. (See Japanese page for detail.)
• Y. Shimada, D. Hiramatsu, M. Moriya, H. Shimada, D. Tadaki, A. Hirano-Iwata, and Y. Mizugaki, Sep. 20, 2023. (See Japanese page for detail.)
• K. Kobayashi, Y. Hayashi, K. Fujikura, M. Moriya, H. Shimada, and Y. Mizugaki, Sep. 20, 2023. (See Japanese page for detail.)

FY 2022:

Awards

• Kenta Sato, March 24, 2023 (see Japanese page for detail.)
• Daiki Fukuyo, March 24, 2023 (see Japanese page for detail.)
• Kenta Sato, March 24, 2023 (see Japanese page for detail.)
• Daiki Hiramatsu, March 24, 2023 (see Japanese page for detail.)

Journal papers

• T. Urae, H. Shimada, and Y. Mizugaki, "Microcontroller-Based Automatic Shut-Off System for Dielectrophoretic Assembly of Gold Nanoparticle Arrays," IEICE Transactions on Electronics (Japanese Edition), vol. J105-C, no. 11, pp. 339-341, November, 2022. [link to DOI]
• N. Sega, Y. Somei, H. Shimada, and Y. Mizugaki, "Operation of a 4-bit RSFQ digital-to-analog converter based on a binary split-confluence configuration," Journal of Physics: Conference Series, vol. 2323, 012033 (7 pages), August, 2022. [link to DOI]
• Y. Mizugaki, N. Sega, and H. Shimada, "100 GHz operation of a 4-bit single-flux-quantum pulse-frequency modulator designed for bipolar D/A conversion," IEICE Electronics Express (ELEX), vol. 19, no. 12, 20220194 (4 pages), June, 2022. [link to DOI]
• K. Sato, N. Sega, Y. Somei, H. Shimada, T. Onomi, and Y. Mizugaki, "Evaluation of True Random Number Generator Utilizing Timing Jitters in RSFQ Logic Circuits," IEICE Transactions on Electronics, vol. E105-C, no. 6, pp. 296-299, June, 2022. [link to IEICE] [link to DOI]
• J. Tanarom, T. Watanabe, Y. Mizugaki and H. Shimada, "Sensitive phonon detection using a single Cooper-pair transistor," Applied Physics Express, vol. 15, no. 6, 064001 (5 pages), June, 2022. [link to DOI]

International conferences

• Y. Mizugaki, K. Sato, and T. Onomi, "Development of SFQ Oscillator-Based Hardware Random Number Generators," 11th East Asia Symposium on Superconductor Electronics (EASSE 2023), Okayama, March 27–29, 2023. (invited)
• S. Hayashi, N. Sega, K. Sato, and Y. Mizugaki, "Voltage-Swing Improvement of Double-SQUID Amplifier by Tuning McCumber Parameter," 11th East Asia Symposium on Superconductor Electronics (EASSE 2023), Okayama, March 27–29, 2023.
• Y. Mizugaki, T. Urae, and H. Shimada, "Nonlinear Responses Observed in Random Arrays of Gold Nanoparticles Assembled by Dielectrophoresis," 13th International Workshop on Nanostructures & Nanoelectronics, On-oine, March 7–8, 2022.
• K. Watanabe, Y. Mizugaki, S. Moriya, H. Yamamoto, and S. Sato, "Parameter optimization of two-dimensionally connected Josephson junctions for reservoir computing," The 11th RIEC International Symposium on Brain Functions and Brain Computer (BFBC 2023), Sendai, February 17–18, 2023.
• K. Sato, N. Sega, H. Shimada, Y. Mizugaki, "Evaluation of True Random Number Sequences Generated by Utilizing Timing Jitters in Superconducting Integrated Circuits," The 35th International Symposium on Superconductivity (ISS 2022), Nagoya and on-line, November 29–December 1, 2022. ED7-4 (oral) (Dec. 1)
• Y. Mizugaki, T. Urae, and H. Shimada, "Microcontroller-Controlled Dielectrophoretic Assembly of Gold Nanoparticle Arrays toward Realization of Physical Reservoir Devices," 35th International Microprocesses and Nanotechnology Conference (MNC 2022), Tokushima, November 8-11, 2022. 10P-3-6 (Nov. 10)
• D. Hiramatsu, R. Sato, M. Moriya, H. Shimada, D. Tadaki, A. Hirano-Iwata, Y. Mizugaki, "Equivalent circuit analysis of AC impedance fluctuation measured across free-standing bilayer lipid membranes mixed with carbon nanotubes," 35th International Microprocesses and Nanotechnology Conference (MNC 2022), Tokushima, November 8-11, 2022. 10P-2-24 (Nov. 10)
• H. Shimada, J. Tanarom, T. Watanabe, T. Iizuka, and Y. Mizugaki, "Sensitive phonon detection by use of a single Cooper-pair transistor," Applied Superconductivity Conference (ASC2022), 1EPo2C-11, Honolulu, October 24, 2022.
• S. Hayashi, N. Sega, K. Sato, and Y. Mizugaki, "Voltage-swing values of double-SQUID amplifiers having various McCumber parameters," The 2022 JSPS 146th Committee International Symposium on Superconductor Electronics jointed with 15th Superconducting SFQ VLSI Workshop (SSV 2022) and 4th Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022), Kyoto, September 28–30, 2022. P-13 (Sep. 30)
• K. Watanabe, Y. Mizugaki, S. Moriya, H. Yamamoto, and S. Sato, "Optimization of circuit parameters for JTL-based reservoir computing," The 2022 JSPS 146th Committee International Symposium on Superconductor Electronics jointed with 15th Superconducting SFQ VLSI Workshop (SSV 2022) and 4th Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022), Kyoto, September 28–30, 2022. P-1 (Sep. 30)
• Y. Mizugaki, K. Sato, N. Sega, Y. Somei, H. Shimada, and T. Onomi, "Hardware Random Number Generator Utilizing Timing Jitters in RSFQ Logic Circuits," The 2022 JSPS 146th Committee International Symposium on Superconductor Electronics jointed with 15th Superconducting SFQ VLSI Workshop (SSV 2022) and 4th Workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2022), Kyoto, September 28–30, 2022. O-2 (Sep. 28)
• H. Shimada, J. Tanarom, T. Watanabe, T. Iizuka, and Y. Mizugaki, "Phonon Detection with a Supercurrent through a Single Cooper-Pair Transistor," 29th International Conference on Low Temperature Physics (LT29), Sapporo and on-line, August 18-24, 2022.

Domestic conferences

• H. Shimada, J. Tanarom, and Y. Mizugaki, Mar. 17, 2023. (See Japanese page for detail.)
• K. Watanabe, Y. Mizugaki, S. Moriya, H. Yamamoto, and S. Sato, Mar. 16, 2023. (See Japanese page for detail.)
• F. Takada, Y. Mizugaki, and H. Shimada, Feb. 28, 2023. (See Japanese page for detail.)
• Y. Hayashi, K. Kobayashi, K. Fujikura, H. Shimada, and Y. Mizugaki, Feb. 28, 2023. (See Japanese page for detail.)
• S. Ueda, Y. Shimada, D. Hiramatsu, M. Moriya, D. Tadaki, A. Hirano-Iwata, and Y. Mizugaki, Feb. 28, 2023. (See Japanese page for detail.)
• K. Sato, N. Sega, H. Shimada, and Y. Mizugaki, Nov. 4, 2022. (See Japanese page for detail.)
• M. Hoshino, Y. Mizugaki, and H. Shimada, Nov. 4, 2022. (See Japanese page for detail.)
• D. Hiramatsu, R. Sato, M. Moriya, H. Shimada, D. Tadaki, A. Hirano-Iwata, and Y. Mizugaki, Sep. 21, 2022. (See Japanese page for detail.)
• T. Urae, H. Shimada, and Y. Mizugaki, Sep. 21, 2022. (See Japanese page for detail.)
• K. Fujikura, T. Urae, M. Moriya, H. Shimada, and Y. Mizugaki, Sep. 20, 2022. (See Japanese page for detail.)
• K. Sato, N. Sega, H. Shimada, and Y. Mizugaki, Sep., 2022. (See Japanese page for detail.)
• K. Watanabe, Y. Mizugaki, S. Moriya, H. Yamamoto, and S. Sato, Aug. 9, 2022. (See Japanese page for detail.)
• Y. Tomioka, M. Moriya, S. Takashima, H. Shimada, F. Hirose, A. Hirano-Iwata, and Y. Mizugaki, Apr. 21, 2022. (See Japanese page for detail.)

List of publications from FY 2002 to FY 2021.

Click here for Mizugaki's personal list of publications.

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