QDNL Participations is an independent venture capital firm based in Amsterdam, launched by Quantum Delta NL in March 2023. It bridges the gap between quantum research grant funding and patient venture capital, investing in early-stage quantum technology startups globally.
35% of their portfolio is in Hardware & Semiconductors. Deal activity increased 67% year-over-year (5 deals in the last 12 months). Their most common stage is seed (47% of deals). Average disclosed round size is $22.9M (across 5 rounds with reported amounts).
Portfolio
13
Fund Size
—
Top Stage
Seed
Last 12 Mo
5
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
17 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Sygaldry | Series A | $105M | Apr 2026 |
 Rhonexum | Pre-Seed | $1M | Mar 2026 |
 QT Sense | Seed | — | Feb 2026 |
 Diffraqtion | Pre-Seed | $4.2M | Jan 2026 |
 Q*Bird | Seed | — | Jan 2026 |
| OOrange Quantum Systems (OrangeQS) | Seed | — | Jun 2025 |
 QuantWare | Series A | — | Mar 2025 |
| QT Sense | Seed | — | Feb 2025 |
 EuQlid | Unknown | $3M | Jan 2025 |
 Quantum Systems | Seed | — | Jan 2025 |
 QphoX | Unknown | — | Jan 2024 |
 QuantaMap | Seed | $1.5M | Dec 2023 |
| QuantWare | Seed | — | Mar 2023 |
| OOrange Quantum Systems | Pre-Seed | — | Jan 2023 |
| Quantum Systems | Pre-Seed | — | Jan 2023 |
| OOrange Quantum Systems | Seed | — | — |
| QQbird | Unknown | — | — |
Top Co-Investors
Cottonwood Technology Fund8 shared
InnovationQuarter7 shared
Qbeat Ventures3 shared
Graduate Ventures2 shared
Quantonation2 shared
Realty Corporation2 shared
Offline Ventures1 shared
Invest-NL1 shared
FORWARD.one1 shared
Angel Invest1 shared
Speedinvest1 shared
Delft Enterprises1 shared
European Investment Bank1 shared
High-Tech Gründerfonds1 shared
Kiko Ventures1 shared
Morpheus Ventures1 shared
468 Capital1 shared
Overmatch Ventures1 shared
Y Combinator1 shared
Last updated: 20 October 2026