Mitsubishi UFJ Capital Invests in Qubitcore, Aiming to Realize Distributed Quantum Computing through QPU Development
Mitsubishi UFJ Capital has invested in Qubitcore, an OIST-launched startup developing QPUs (Quantum Processing Units). The investment aims to fundamentally solve the scalability issues of quantum hardware through distributed architecture using unique micro-cavity technology.
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- 📰 Published: April 28, 2026 at 00:00
- 🔍 Collected: April 27, 2026 at 15:32
- 🤖 AI Analyzed: April 28, 2026 at 01:19 (9h 47m after Collected)
Mitsubishi UFJ Capital Co., Ltd. (Headquarters: Chuo-ku, Tokyo; President: Takuro Kijima) has announced that it invested in Qubitcore Inc. (hereinafter 'Qubitcore') on March 31, 2026, through its managed fund (Mitsubishi UFJ Capital No. 10 Investment Limited Partnership). Qubitcore is developing Quantum Processing Units (QPUs), which serve as the foundation for quantum computers.
### About Qubitcore
Qubitcore is a deep-tech startup focused on quantum hardware development, established to implement the research results of the 'Quantum Information and Physics Experiment Unit' led by Associate Professor Yuki Takahashi at the Okinawa Institute of Science and Technology (OIST).
While traditional ion-trap methods face physical limits in integration, Qubitcore is developing trap modules that integrate proprietary micro-cavity technology. By significantly enhancing light-matter interaction, they have improved the success rate and fidelity of remote entanglement generation via single photons, which was previously a low-probability event.
Using this core technology, Qubitcore is building a distributed architecture that reliably interconnects multiple QPUs via optical networks. This approach pushes forward the implementation of a computational foundation aimed at realizing Fault-Tolerant Quantum Computers (FTQC) that exceed the physical expansion limits of a single QPU (single trap).
### Investment Rationale
Qubitcore possesses a unique design philosophy that addresses the inherent scalability challenges of ion-trap systems from the physical layer. Specifically, they focus on a 'QPU interconnection interface realized through quantum optical connections using micro-cavities,' a highly difficult technical element. Mitsubishi UFJ Capital believes this approach does not stop at partial performance improvement but fundamentally breaks through the scaling problems of quantum computers, potentially building a strong competitive advantage in the hardware sector.
Furthermore, while Qubitcore is initially focused on realizing quantum computers, its technology also has potential applications in quantum repeaters, which will support the future quantum internet.
Through this investment, Mitsubishi UFJ Capital will leverage the MUFG network and expertise to support Qubitcore’s social implementation of next-generation quantum computer foundations and its medium-to-long-term business growth, keeping an eye on future technological trends and potential applications. (Person in charge: Masato Otsuji, Investment Department III)
### Qubitcore Profile
Company Name: Qubitcore Inc.
Location: 7F Yokohama Landmark Tower, 2-2-1 Minatomirai, Nishi-ku, Yokohama, Kanagawa
Representative: Ryuta Watanuki, Representative Director and CEO
Established: July 2024
Business: Development of ion-trap QPUs, distributed quantum computers with strengths in quantum optical connection technology using micro-cavities, and construction of FTQC computational foundations.
URL: https://qubitcore.jp
### About Mitsubishi UFJ Capital Co., Ltd.
Since its establishment in 1974, Mitsubishi UFJ Capital has provided industry-leading expertise and invested in a wide range of industries as the venture capital arm of the Mitsubishi UFJ Financial Group. Approximately 930 client companies have achieved IPOs, representing one of the top performance records in the industry.
**Corporate Overview**
Company Name: Mitsubishi UFJ Capital Co., Ltd.
Location: 7F Nihonbashi Plaza Bldg., 2-3-4 Nihonbashi, Chuo-ku, Tokyo
Representative: Takuro Kijima, President
Established: August 1, 1974
Business: Venture Capital
URL: https://www.mucap.co.jp/
### About Mitsubishi UFJ Capital No. 10 Investment Limited Partnership
General Partner: Mitsubishi UFJ Capital Co., Ltd.
Investors: MUFG Bank, Ltd., Mitsubishi UFJ Capital Co., Ltd.
Established: April 1, 2025
Total Fund Amount: 30 billion yen
### About Qubitcore
Qubitcore is a deep-tech startup focused on quantum hardware development, established to implement the research results of the 'Quantum Information and Physics Experiment Unit' led by Associate Professor Yuki Takahashi at the Okinawa Institute of Science and Technology (OIST).
While traditional ion-trap methods face physical limits in integration, Qubitcore is developing trap modules that integrate proprietary micro-cavity technology. By significantly enhancing light-matter interaction, they have improved the success rate and fidelity of remote entanglement generation via single photons, which was previously a low-probability event.
Using this core technology, Qubitcore is building a distributed architecture that reliably interconnects multiple QPUs via optical networks. This approach pushes forward the implementation of a computational foundation aimed at realizing Fault-Tolerant Quantum Computers (FTQC) that exceed the physical expansion limits of a single QPU (single trap).
### Investment Rationale
Qubitcore possesses a unique design philosophy that addresses the inherent scalability challenges of ion-trap systems from the physical layer. Specifically, they focus on a 'QPU interconnection interface realized through quantum optical connections using micro-cavities,' a highly difficult technical element. Mitsubishi UFJ Capital believes this approach does not stop at partial performance improvement but fundamentally breaks through the scaling problems of quantum computers, potentially building a strong competitive advantage in the hardware sector.
Furthermore, while Qubitcore is initially focused on realizing quantum computers, its technology also has potential applications in quantum repeaters, which will support the future quantum internet.
Through this investment, Mitsubishi UFJ Capital will leverage the MUFG network and expertise to support Qubitcore’s social implementation of next-generation quantum computer foundations and its medium-to-long-term business growth, keeping an eye on future technological trends and potential applications. (Person in charge: Masato Otsuji, Investment Department III)
### Qubitcore Profile
Company Name: Qubitcore Inc.
Location: 7F Yokohama Landmark Tower, 2-2-1 Minatomirai, Nishi-ku, Yokohama, Kanagawa
Representative: Ryuta Watanuki, Representative Director and CEO
Established: July 2024
Business: Development of ion-trap QPUs, distributed quantum computers with strengths in quantum optical connection technology using micro-cavities, and construction of FTQC computational foundations.
URL: https://qubitcore.jp
### About Mitsubishi UFJ Capital Co., Ltd.
Since its establishment in 1974, Mitsubishi UFJ Capital has provided industry-leading expertise and invested in a wide range of industries as the venture capital arm of the Mitsubishi UFJ Financial Group. Approximately 930 client companies have achieved IPOs, representing one of the top performance records in the industry.
**Corporate Overview**
Company Name: Mitsubishi UFJ Capital Co., Ltd.
Location: 7F Nihonbashi Plaza Bldg., 2-3-4 Nihonbashi, Chuo-ku, Tokyo
Representative: Takuro Kijima, President
Established: August 1, 1974
Business: Venture Capital
URL: https://www.mucap.co.jp/
### About Mitsubishi UFJ Capital No. 10 Investment Limited Partnership
General Partner: Mitsubishi UFJ Capital Co., Ltd.
Investors: MUFG Bank, Ltd., Mitsubishi UFJ Capital Co., Ltd.
Established: April 1, 2025
Total Fund Amount: 30 billion yen