MentionFox lists 20 Quantum computing companies. Of them, 3 are Y Combinator companies (the newest batch here is Spring 2025, with 1); 8 filed a Form D notice with the SEC; 9 won an SBIR or STTR award. Across the 8 Form D notices in the table that report an amount sold, the median is $9.2M; the largest is $275M, by D-Wave Quantum Inc. (its Form D, filed Jan 30, 2026). The median SBIR or STTR award in the table is $1.7M, across 9 awards.
Quantum computing startups
| Company | What it does | Date | Amount | Round / stage | Record |
|---|---|---|---|---|---|
| Qudara Inc. | Filed Aug 18, 2026 | $5.3M | SEC Form D | ||
| Quantropi Inc. (funding history) | Filed May 11, 2026 | $1.3M | SEC Form D | ||
| Quantum Power Group, Inc. (funding history) | Filed Apr 24, 2026 | $30,050 | SEC Form D | ||
| Zapata Quantum, Inc. (funding history) | Filed Apr 22, 2026 | $13.2M | SEC Form D | ||
| Aeluma, Inc. | D2p2, topic number o254-d05, integrated quantum dots platform for multi-channel coherent optical amplification develop a… | Award starts Apr 13, 2026 | $2.1M | SBIR | Federal award record |
| Excellerix, LLC | Phii topic number osd232-009, application-specific electronic package for a quantum sensor an application-specific electronics package… | Award starts Apr 13, 2026 | $1.7M | SBIR | Federal award record |
| Fieldline Industries Inc | Small business innovation research (sbir) direct to phase ii, topic number o254-d04, resilient domestic supply of vcsels for quantum devices | Award starts Apr 6, 2026 | $2.1M | SBIR Phase II | Federal award record |
| Fuceltech Inc | Direct to phase ii, topic number o254-d04, resilient domestic supply of vcsels for quantum devices addresses key supply chain… | Award starts Apr 6, 2026 | $2.1M | SBIR Phase II | Federal award record |
| Advanced Research, Inc. | Small business innovation research (sbir), phase ii, topic a244-012, quantum enhanced RF components north american industry… | Award starts Mar 31, 2026 | $2M | SBIR Phase II | Federal award record |
| Monarch Quantum, Inc. (funding history) | Filed Mar 31, 2026 | $52.6M | SEC Form D | ||
| Infleqtion, Inc. | Filed Feb 25, 2026 | $127M | SEC Form D | ||
| D-Wave Quantum Inc. | Filed Jan 30, 2026 | $275M | SEC Form D | ||
| QodeX Quantum, Inc. (funding history) | Filed Jan 20, 2026 | $550,000 | SEC Form D | ||
| Apexquantum, Inc. | Optimizing quantum circuit compiler for quantum software and hardware developers | Award starts Oct 1, 2025 | $304,999 | SBIR Phase I | Federal award record |
| Direct Kinetic Solutions Inc | Dks quantum stackable radioisotopic power source (rps) | Award starts Aug 1, 2025 | $985,369 | SBIR Phase II | Federal award record |
| Emode Photonix LLC | Nonlinear eigenmode expansion method for integrated quantum photonics | Award starts Apr 1, 2025 | $305,000 | SBIR Phase I | Federal award record |
| Sygaldry Technologies | quantum-accelerated AI servers | Spring 2025 | Y Combinator batch | Y Combinator listing | |
| Forward Edge AI Inc | Strategic advancements in resilient space technologies for pwsa enhancement | Award starts Jan 15, 2025 | $1.5M | SBIR Phase II | Federal award record |
| Conductor Quantum | AI that operates quantum computers for scientific discovery | Summer 2024 | Y Combinator batch | Y Combinator listing | |
| Menten AI | Menten AI designs peptide and protein therapeutics using quantum… | Winter 2020 | Y Combinator batch | Y Combinator listing |
Selling to these companies?
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Figures come only from the record linked in each row; a blank means the record gives none. How these lists are built.