Specially-appointed Professor

Rui Tang Ph.

Tang RUI

Specially Appointed Lecturer (fixed term)

Biography:Graduated from Nanjing University of Aeronautics and Astronautics (China) in October 2013. He entered the master's program at Tohoku University and completed it in October 2013. He then entered the Department of Electrical Engineering, Graduate School of Engineering, The University of Tokyo, where he received his Ph. While in school, he stayed at the Massachusetts Institute of Technology for about one year as a visiting student. After completing the doctoral program, he temporarily returned to Japan and served as a specially-appointed researcher and specially-appointed assistant professor at the Graduate School of the University of Tokyo.

Sep. 2009 Entered Nanjing University of Aeronautics and Astronautics (China), School of Electronics and Information Engineering, Department of Information Engineering
Oct. 2012 - Sept. 2013 Exchange student, Faculty of Engineering, Tohoku University
Oct 2013 Graduated from Nanjing University of Aeronautics and Astronautics (China), Department of Electronics and Information Engineering, Information Engineering
Oct 2013 Entered Master's program in Communication Engineering, Graduate School of Engineering, Tohoku University
Sep. 2015 Completed Master's program in Communication Engineering, Graduate School of Engineering, Tohoku University
Oct. 2015 - Mar. 2016 Research student, Department of Electrical Engineering, Graduate School of Engineering, The University of Tokyo
April 2016 Entered Doctoral Program in Electrical Engineering, Graduate School of Engineering, The University of Tokyo
April 2018 - March 2019 Visiting student, Research Laboratory of Electronics, MIT
Mar 2020 Completed Doctoral program in Electrical Engineering, Graduate School of Engineering, The University of Tokyo, Ph.
Jul. 2020-Aug. 2020 Academic Support Staff, Department of Electrical Engineering, Graduate School of Engineering, The University of Tokyo
Sep. 2020-Mar. 2021 Shenzhen China Star Optoelectronics Technology Co.
Apr. 2021-Sep. 2021 Project Researcher, Department of Electrical Engineering, Graduate School of Engineering, The University of Tokyo
Oct. 2021-Mar. 2025 Project Assistant Professor, Department of Electrical Engineering, Graduate School of Engineering, The University of Tokyo

March 2015 Academic Encouragement Award (IEICE)
June 2019 Uenohara International Student Encouragement Award (Foundation for the Promotion of Science in Electrical Electronics and Information Technology)
Mar 2020 Best Doctoral Dissertation Award (Department of Electrical Engineering, Graduate School of Engineering, The University of Tokyo)
Mar 2024 The 55th (Fall 2023) Award for Encouragement of Lectures, Japan Society of Applied Physics

  1. R. Tang, S. Ohno, K. Tanizawa, K. Ikeda, M. Okano, K. Toprasertpong, S. Takagi, and M. Takenaka, "Symmetric silicon microring resonator optical crossbar array for accelerated inference and training in deep learning," Photonics Research, vol. 12, no. 8, pp. 1681-1688, 2024.
  2. Y. Miyatake, R. Tang, K. Makino, J. Tominaga, N. Miyata, M. Okano, K. Toprasertpong, S. Takagi, and M. Takenaka, "Photonic matrix-vector Multiplication with Low-insertion-loss and Non-volatile Ge2Sb2Te3S2 Intensity Modulators," Journal of Lightwave Technology, vol. 42, no. 12, pp. 425-431, 2008. , no. 12, pp. 4347-4354, 2024.
  3. Y. Wakita, R. Tang, H. Tang, S. Ohno, T. Akazawa, Y. Miyatake, S. Monfray, F. Boeuf, K. Toprasertpong, S. Takagi, and M. Takenaka, "Add-drop Microring Resonator Switch with Positive/negative Phase Tuning using InGaAsP/Si Hybrid MOS Phase Shifter," Journal of Lightwave Technology, vol. 42, no. 12, pp. 4289-4295, 2024.
  4. R. Tang, R. Tanomura, T. Tanemura, and Y. Nakano, "Lower-depth programmable linear optical processors," Physical Review Applied, vol. 21, no. 1, 014054, 2024.
  5. R. Tanomura, R. Tang, T. Tanemura, and Y. Nakano, "Demonstration of Error-Tolerant Integrated Optical Processors Based on Multi-Plane Light Conversion," IEEE Photonics Technology Letters, vol. 35, no. 23, pp. 1275-1278, 2023.
  6. R. Tang, K. Watanabe, M. Fujita, H. Tang, T. Akazawa, K. Toprasertpong, S. Takagi, and M. Takenaka, "Non-Volatile Hybrid Optical Phase Shifter Driven by a Ferroelectric Transistor," Laser & Photonics Reviews, vol. 17, no. 11, 2300279, 2023.
  7. R. Tanomura, R. Tang, G. Soma, S. Ishimura, T. Tanemura and Y. Nakano, "All-Optical MIMO Demultiplexing Using Silicon-Photonic Dual- Polarization Optical Unitary Processor," Journal of Lightwave Technology, vol. 41, no. 12, pp. 3791-3796, 2023.
  8. R. Tang, M. Okano, K. Toprasertpong, S. Takagi, D. Englund, and M. Takenaka, "Two-layer integrated photonic architectures with multiport photodetectors for high-fidelity and energy-efficient matrix multiplications," Optics Express, vol. 30, no. 19, pp. 33940-33954, 2022 .
  9. S. Ohno, R. Tang, K. Toprasertpong, S. Takagi, and M. Takenaka, "Si Microring Resonator Crossbar Array for On-Chip Inference and Training of the Optical Neural Network," ACS Photonics, vol. 9, no. 8, pp. 2614-2622, 2022.
  10. R. Tanomura, R. Tang, T. Umezaki, G. Soma, T. Tanemura, and Y. Nakano, "Scalable and robust photonic integrated unitary converter based on multiplane light conversion," Physical Review Applied, vol. 17, no. 2, 024071, 2022.
  11. R. Tanomura, R. Tang, T. Tanemura, and Y. Nakano, "Integrated InP optical unitary converter with compact half-integer multimode interferometers," Optics Express, vol. 29, no. 26, pp. 43414-43420, 2021.
  12. S. Emara, T. Fukui, K. Komatsu, Y. Kohno, R. Tang, T. Tanemura, and Y. Nakano, "Single-pixel imaging using carrier-depletion optical phased array with reduced phase shift requirement," IEEE Photonics Journal, vol. 13, no. 5, 6600105, 2021.
  13. R. Tang, R. Tanomura, T. Tanemura, and Y. Nakano, "Ten-port unitary optical processor on a silicon photonic chip," ACS Photonics, vol. 8, no. 7, pp. 2074-2080, 2021.
  14. T. Fukui, Y. Kohno, R. Tang, Y. Nakano, and T. Tanemura, "Single-pixel imaging using multimode fiber and silicon photonic phased array ," Journal of Lightwave Technology, vol. 39, no. 3, pp. 839-844, 2021.
  15. R. Tanomura, R. Tang, T. Suganuma, K. Okawa, E. Kato, T. Tanemura, and Y. Nakano, "Monolithic InP optical unitary converter based on multi- plane light conversion," Optics Express, vol. 28, no. 18, pp. 25392-25399, 2020.
  16. R. Tanomura, R. Tang, T. Tanemura, and Y. Nakano, "Robust integrated optical unitary converter using multiport directional couplers ," Journal of Lightwave Technology, vol. 38, no. 1, pp. 60-66, 2020.
  17. Y. Kohno, K. Komatsu, R. Tang, Y. Ozeki, Y. Nakano, and T. Tanemura, "Ghost imaging using a large-scale silicon photonic phased array chip ," Optics Express, vol. 27, no. 3, pp. 3817-3823, 2019.
  18. R. Tang, T. Tanemura, S. Ghosh, K. Suzuki, K. Tanizawa, K. Ikeda, H. Kawashima, and Y. Nakano, "Reconfigurable all-optical on-chip MIMO three-mode demultiplexing based on multi-plane light conversion," Optics Letters, vol. 43, no. 8, pp. 1798-1801, 2018.
  19. R. Tang, T. Tanemura, and Y. Nakano, "Integrated reconfigurable unitary optical mode converter using MMI couplers," IEEE Photonics Technology Letters, vol. 29, no. 12, pp. 971-974, 2017.
  20. T. Kita, R. Tang, and H. Yamada, "Narrow spectral linewidth silicon photonic wavelength tunable laser diode for digital coherent communication system," IEEE Journal of Selected Topics in Quantum Electronics, vol. 22, no. 6, 1500612, 2016.
  21. R. Tang, T. Kita, and H. Yamada, "Narrow-spectral-linewidth silicon photonic wavelength-tunable laser with highly asymmetric Mach- Zehnder interferometer," Optics Letters, vol. 40, no. 7, pp. 1504-1507, 2015.
  22. T. Kita, R. Tang, and H. Yamada, "Compact silicon photonic wavelength-tunable laser diode with ultra-wide wavelength tuning range ," Applied Physics Letters, vol. 106, no. 11, 111104, 2015.

Member of the Japan Society of Applied Physics, June 2021-present
August 2021 - Present Optica Members
December 2023 - Present IEEE Member
Apr. 2024-Present Program Editorial Board Member of the Japan Society of Applied Physics Conference

Bowen LIU, Ph.D

Bowen LIU

Specially Appointed Assistant Professor (fixed term)

Biography:He graduated from Huazhong University of Science and Technology in June 2017 and completed his master's degree (joint degree with Nanyang Technological University) in June 2020. D. degree in engineering from the University of Tokyo in September 2024. During his graduate studies at the University of Tokyo, he was engaged in research on fiber lasers.

2013.9 - 2017.6 Huazhong University of Science and Technology, Bachelor
2017.9 - 2020.6 Huazhong University of Science and Technology, Master of Engineering
2019.9 - 2020.6 Nanyang Technological University, Joint Master
2023.6 - 2023.7 University of Cambridge, Visiting Student 
2020.9 - 2024.9 The University of Tokyo, Doctor of Engineering

2024.9 Student Achievement Award in IEEE OGC 2024
2023.9 Best Paper Award & Front Cover Paper in the 8th IEEE Optoelectronics Global Conference
2020.6 Outstanding Master Graduate of HUST
2019.8 Best Poster Award in the 18th International Conference of Optical Communications and Networks
2018.12 Award Nomination of the "HUST Academic Star"
2018.11 Best Paper Award in the 17th International Conference of Optical Communications and Networks
2018.11 Best Student Presentation Award in the Optical Valley Postgraduates Forum 
2018.10 Chinese National Scholarship for Postgraduate
2018.9 Silver Award of the 4th China "Internet+" College Students Innovation and Entrepreneurship Competition
2018.1 / 2019.1 Excellent Class Tutor of HUST
2017.6 Outstanding Bachelor Graduate of HUST
2017.6 Excellent Graduate Dissertation of HUST

  1. M. Dai, B. Liu, Y. Ma, T. Shirahata, R. Yang, Z. Zhang, S. Y. Set, and S. Yamashita, Appl. Phys. Express 17, 062001 (2024).
  2. B. Liu, S. Yamashita, and S. Y. Set, Optics Lett. 49, 2417-2420 (2024).
  3. G. Ye, B. Liu, M. Dai, Y. Ma, T. Shirahata, S. Yamashita, and S. Y. Set, Optics Lett. 49, 2433-2436 (2024).
  4. M. Dai, B. Liu, T. Shirahata, X. Sun, S. Y. Set, and S. Yamashita, Opt. Laser Technol. 176, 111002 (2024).
  5. B. Liu, T. Shirahata, G. Ye, M. Dai, Y. Ma, S. Yamashita, and S. Y. Set, J. Light. Technol. 42, 3376-3384 (2024).
  6. G. Ye, K. K. Chow, B. Liu, M. Dai, Y. Ma, T. Shirahata, S. Yamashita, and S. Y. Set, Optics Lett. 48, 4729-4732 (2023).
  7. M. Dai, B. Liu, T. Shirahata, X. Sun, S. Set, and S. Yamashita, Opt. Express 31, 27810-27820 (2023).
  8. J. Hu, Z. Xing, M. Zou, B. Liu, X. Guo, F. Fang, Y. Sun, Q. Sun, Z. Yan, K. Zhou, D. Liu, and L. Zhang, IEEE Photonics Technol. Lett. 32, 510-513 (2020).
  9. Y. Luo, Y. Xiang, R. Xia, W. Ni, B. Liu, P. P. Shum, X. Tang, D. Liu, and Q. Sun, IEEE Photonics Technol. Lett. 32, 481 (2020).
  10. B. Liu, Y. Liu, Y. Luo, Y. Xiang, P. P. Shum, X. Tang, D. Liu, and Q. Sun, Optics Commun. 457, 124700 (2020).
  11. B. Liu, Y. Luo, Y. Xiang, W. Zhou, P. Shum, Z. Yan, X. Tang, D. Liu, and Q. Sun, IEEE Photonics Technol. Lett. 31, 1737-1740 (2019).
  12. Y. Luo, Y. Xiang, T. Liu, B. Liu, Z. Yan, D. Liu, X. Tang, P. P. Shum, and Q. Sun, Optics Lett. 44, 4263 (2019).
  13. Y. Xiang, Y. Luo, B. Liu, R. Xia, P. P. Shum, X. Tang, D. Liu, and Q. Sun, J. Lightwave Technol. 37, 5108-5114 (2019).
  14. Y. Luo, Y. Xiang, B. Liu, Y. Qin, Q. Sun, X. Tang, and P. P. Shum, IEEE Photonics J. 10, 7105210 (2018).
  15. B. Liu, Y. Luo, Y. Xiang, X. Xiao, Q. Sun, D. Liu, and P. P. Shum, Opt. Express 26, 27461-27471 (2018).
  16. B. Liu, Y. Xiang, Y. Luo, S. Zhu, Z. Yan, Q. Sun, and D. Liu, Appl. Phys. B: Lasers and Optics 124, 151 (2018).
  17. Y. Luo, B. Liu, Y. Xiang, Z. Yan, Y. Qin, Q. Sun, and X. Tang, IEEE Photonics Technol. Lett. 30, 1333-1336 (2018).
  18. Y. Xiang, Y. Luo, B. Liu, Z. Yan, Q. Sun, and D. Liu, Sci. Rep. 8, 6049 (2018).
  19. Y. Luo, J. Cheng, B. Liu, Q. Sun, L. Li, S. Fu, D. Tang, L. Zhao, and D. Liu, Sci. Rep. 7, 2369 (2017).

2023.6 - Present IEEE Optoelectronics Global Conference Technical Committee Member
2018.8 - Present Optics Exp., Opt. Lett., Photonics Res., Appl. Opt., J. Lightwave Technol., Photonics, Results Phys. Reviewer
2022.9 - 2023.10 Optica (formerly OSA) UOT Chapter President
2018.1 - 2020.6 General project of NSFC Grant No. (61775072) Main Member
2017.6 - 2019.6 WangDaheng" Project in HUST Class Tutor

KLL Researcher

Goki Kawanishi ( Project Professor, Doctor of Engineering )

Satoki KAWANISHI, Ph.D.

Research Professor

  • Affiliation / Position : Photonic Crystal Institute / Representative

Technical Staff

Motoi Kumazaki ( Technical Staff )

Hajime KUMAZAKI

Hajime KUMAZAKI

  • Keio Highschool
Bio: His hobby is watching sports. He has a broad knowledge of sports in general, and is especially fond of professional baseball. (A fan of the Chunichi Dragons.) He is the biggest eater in our laboratory.

Administration Assistant

Atsuki SHINKI

Administration Assistant

person in charge of clerical duties

  • I work once a week. Thank you for your cooperation.
Bio:I love sports!
  • a.shinki@phot.elec.keio.ac.jp
  • 24-210A
  • 045-566-1730 ( ext. 42285 )
  • 045-566-1529