# A Star Quantum

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/a-star-quantum

- Industry: Software
- Headquarters: Tokyo, Japan
- Website: https://a-star-quantum.jp
- Total disclosed funding: $8M
- Latest round: Series B (Jun 5, 2026)
- Investors on record: 13

## About

Founded in 2018 and based in Japan, A Star Quantum Inc. d.b.a A Star Quantum specializes in advanced quantum computing technologies, providing innovative solutions that tackle complex computational challenges across various industries, A Star Quantum Inc. operates from Tokyo, Japan, focusing on quantum computing solutions. In June 2026, A Star Quantum Inc. raised JPY 900 million in series B funding led by ITOCHU Technology Ventures, with participation from Translink Capital, Abies Ventures, and Innovation Engine Inc., Suzuyo, Hiroshima Venture Capital and THE GOGIN CAPITAL also participated in the round. This round was part of a larger equity and debt financing.
As of May 2026, CEO Koji Funabashi leads the firm, which is known for its innovative approaches in the quantum technology sector.A Star Quantum specializes in advanced quantum computing solutions designed to address complex computational challenges across various industries. Their core offerings include quantum algorithms and hardware components that optimize processes for sectors such as pharmaceuticals, finance, and telecommunications. By leveraging quantum mechanics, A Star Quantum aims to provide their clients with unprecedented speed and efficiency in data processing. The company serves a diverse clientele, including large enterprises and research institutions, primarily in North America, Europe, and parts of Asia.The revenue model for A Star Quantum is structured around direct sales and strategic partnerships, primarily targeting B2B clients. Their flagship products, including proprietary quantum software and hardware solutions, are sold through subscription plans and one-time licensing agreements. Each transaction typically involves an initial setup fee followed by recurring charges based on usage or subscription tiers, allowing for flexible engagement based on the client's computational demands. A Star Quantum focuses on creating long-term relationships with clients to facilitate ongoing support and updates as part of their service offerings. The company plans to use the June 2026 funding to expand its AQCloud platform, strengthen R&D, and scale global operations.

## Funding rounds

- Series B, Jun 5, 2026 — Innovation Engine, Translink Capital, ITOCHU Technology Ventures, THE GOGIN CAPITAL, Hiroshima Venture Capital, Abies Ventures, Suzuyo
- Series B, Aug 30, 2023, $5.1M — ITOCHU Technology Ventures
- Series A, Nov 2, 2020, $2.9M — Mitsubishi UFJ Capital, Plug and Play, NEC Capital Solutions, Dentsu, Jigyo Souzou Capital, Abies Ventures, Plug and Play Japan

## Investors

- Mitsubishi UFJ Capital (https://capitalatlas.ai/funds/mitsubishi-ufj-capital) — Series A
- Plug and Play (https://capitalatlas.ai/funds/plug-and-play) — Series A
- NEC Capital Solutions (https://capitalatlas.ai/funds/nec-capital-solutions) — Series A
- Dentsu — Series A
- Jigyo Souzou Capital (https://capitalatlas.ai/funds/jigyo-souzou-capital) — Series A
- Abies Ventures (https://capitalatlas.ai/funds/abies-ventures) — Series A, Series B
- Plug and Play Japan — Series A
- ITOCHU Technology Ventures (https://capitalatlas.ai/funds/itochu-technology-ventures) — Series B
- Innovation Engine (https://capitalatlas.ai/funds/innovation-engine) — Series B
- Translink Capital (https://capitalatlas.ai/funds/translink-capital) — Series B
- THE GOGIN CAPITAL (https://capitalatlas.ai/funds/the-gogin-capital) — Series B
- Hiroshima Venture Capital (https://capitalatlas.ai/funds/hiroshima-venture-capital) — Series B
- Suzuyo — Series B