Meet Our Team

• #Quantum Technology

Takuya Hasegawa

• Profile
  Takuya Hasegawa received his Ph.D. degree in theoretical physics from the Graduate University for Advanced Studies (SOKENDAI) in 2020. He joined SoftBank Corp. in 2020, where he has been engaged in research and development of next-generation mobile communication systems using HAPS. He is currently studying quantum cryptography and quantum communication at the Research Institute of Advanced Technology.
• Research area
  • Quantum cryptograhy
  • Quantum communications
• Major awards
  • Young researcher's award at IEICE (2023)
• Major publications / papers
  • T. Hasegawa, M. Konishi, Y. Ohta and A. Nagate, "An Experimental Study on Automatic Gain Control in HAPS Wireless Repeater System," 2023 IEEE Wireless Communications and Networking Conference (WCNC), pp. 1-6, doi: 10.1109/WCNC55385.2023.10118653.
• Major achievements
  • Development of lightweight and low-power 5G repeaters for stratospheric environment
  • Press Release：Government of Rwanda in Partnership with SoftBank Corp. Successfully Delivers World's First 5G Connectivity from the Stratosphere
• Research areas and achievements as a student
  Cosmology, Particle physics, Numerical simulation

  • Research subject:
    - Thermal history of the early Universe
    - Big-Bang Nucleosynthesis
  • Publication:
    - Takuya Hasegawa, Nagisa Hiroshima, Kazunori Kohri, Rasmus Sloth Hansen, Thomas Tram and Steen Hannestad, "MeV-scale reheating temperature and thermalization of oscillating neutrinos by radiative and hadronic decays of massive particles," Journal of Cosmology and Astroparticle Physics, 2019(12), 012.
    - Takuya Hasegawa, Nagisa Hiroshima, Kazunori Kohri, Rasmus Sloth Hansen, Thomas Tram and Steen Hannestad, "MeV-scale reheating temperature and cosmological production of light sterile neutrinos," Journal of Cosmology and Astroparticle Physics, 2020(08), 015.
• Hobbies and How to Spend Holidays
  Outdoor activities including mountain climbing and cycling. My dream is to travel around the world by bicycle.
• Birthplace and upbringing
  Koga City, Ibaraki Prefecture
• What we value in our research
  Fostering the seeds of curiosity without being overly focused on the value or significance of research