Bringing the best of Japan to the Quantum field
Qubitcore leverages advanced technology from the Okinawa Institute of Science and Technology (OIST) to develop the next generation of fault-tolerant universal quantum computers.
By integrating proprietary ion trap technology with optical microcavities, we will build a scalable quantum processor network enabled by optical quantum connections, ensuring high fidelity and connectivity.
Our Vision
By bringing research into real-world applications, we envision a future where quantum computers are within reach for everyone, and we strive to make that vision a reality.
Our Mission
Our mission is to drive innovation in quantum computing technology, contributing to the advancement of the global scientific industry and security challenges, and to lead society through the next revolution.
About the Company
Company Name
Qubitcore Inc.
Founded
July 11, 2024
Director Founder & CEO
Ryuta Watanuki
Phone
045-900-0797
Location
Headquarters:
7th Floor, Yokohama Landmark Tower, 2-2-1 Minatomirai, Nishi-ku, Yokohama, Kanagawa 220-8107, Japan
Okinawa R&D Center:
OIC2-207, OIST Innovation Core2, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
Business Activities
Research, development, manufacturing and sales of quantum computers and related technologies, as well as planning and operation of related services.
Our Team
Top researchers, engineers and business talents bringing world-class expertise to take humanity into the quantum era.
Ryuta Watanuki, Ph.D.
Founder & CEO
Ryuta Watanuki earned his Ph.D. in Experimental Solid-State Physics (Magnetism) from Yokohama National University, where he conducted research in condensed matter physics and chemistry. After a postdoctoral appointment at the University of Tokyo, he served as Assistant Professor at Yokohama National University, engaging in both research and education in solid-state materials. In 2021, he became CEO of Grace Corporation, where he managed and expanded a nursing-care business and later led the company through an M&A exit. Drawing on this management experience, he founded EXYNA Inc. in 2022 and subsequently established Qubitcore Inc. in 2024. He is now fully dedicated to leading Qubitcore’s vision and operations, driving the company toward the realization of distributed, fault-tolerant ion-trap quantum computing systems originating from Japan.
Prof. Hiroki Takahashi
Co-Founder & CSO
Hiroki Takahashi holds a Ph.D. in Quantum Optics from the University of Tokyo. In 2010, he began research on ion traps and cavity QED at the University of Sussex in the UK. After returning to Japan, he conducted research on superconducting Josephson circuits at the University of Tokyo before joining the Okinawa Institute of Science and Technology (OIST) in 2019 as an Assistant Professor. At OIST, he leads the Experimental Quantum Information Physics Unit and, since 2020, has served as Project Manager for Japan’s Moonshot R&D Program Goal 6, “Fault-tolerant Quantum Computing with Photonic Interconnected Ion Traps.”"
Ezra Kassa, Ph.D.
Co-Founder &Scientific Advisor
Ezra Kassa obtained a Ph.D. from the University of Sussex after graduating from Imperial College London, where he conducted research on ions confined in optical cavities in Matthias Keller’s group. He later joined Axel Kuhn’s Atom-Photon Connection group at the University of Oxford, working on neutral-atom systems, and subsequently participated in David Lucas’s Ion Trap Quantum Computing Group at Oxford. Since 2019, he has been serving as a Staff Scientist at the Okinawa Institute of Science and Technology (OIST), focusing on ion-trap experiments integrated with optical cavities.
Shaobo Gao, Ph.D.
Co-Founder & Scientific Advisor
Shaobo Gao majored in Physics at the National University of Defense Technology and obtained a Ph.D. in Quantum Optics from the University of Oxford. At Oxford, he worked on two projects — one on quantum memory using atomic ensembles in Ian Walmsley’s group, and another on integrating optical micro-cavities with ion traps in David Lucas’s group. His work included theoretical studies in cavity QED and laser cooling. Since 2022, he has been working as a Postdoctoral Scholar at the Okinawa Institute of Science and Technology (OIST), focusing on ion traps confined in optical cavities.
Koichiro Miyanishi, Ph.D.
Co-Founder & Lead Scientist
Koichiro Miyanishi obtained a Ph.D. from Osaka University, where he conducted research on quantum sensing and quantum devices. Afterward, he worked as an Assistant Professor at Osaka University and spent one year at the University of Oxford as a visiting researcher. In 2024, he was promoted to Lecturer at Osaka University. In the same year, he joined Qubitcore as a founding member.