Q
QphoX
Quantum transduction device for networked quantum computers.
About QphoX
Developer of a quantum modem device designed to assist in connecting quantum computers across a quantum network. The company's quantum transducer is based on coupling microwave and optical photons through a mechanical intermediary resonator which in turn helps in converting quantum information between the microwave domain and optical telecom frequencies, enabling clients to reduce the loss and improve fidelity transmission of quantum states. Keywords: Technology Hardware, Modem Devices, Quantum Computer Hardware, Quantum Computing, Quantum Hardware, Quantum Internet, Quantum Network.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2021
- Headquarters
- Delft, Netherlands
- Employees
- 42
- Open positions
- 8
- Dealroom signal
- 84.0/100
- Sector
- Semiconductors, Quantum Computing, Spinout, EIC, Quantum Internet, EIC Fund, Future of Computing, Semiconductor Designers and Manufacturers, Quantum Computers and Processors, Photonics Tech
- Technology
- Hardware, Deep Tech, Quantum Technologies
- Business model
- Manufacturing
- Client focus
- b2b
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| GRANT✓Other financing | Sep 2025 | $1.1M | — | European Innovation Council | — |
| EARLY VC✓Equity / VC | Jan 2024 | $8.8M | $35M | Speedinvest · Delft Enterprises · Quantonation · EIC Fund | ↗ |
Growth signals
Latest recorded traffic for QphoX is 3.3K monthly website visits, up 26.9% over the last three months. QphoX's team grew 10.5% over the past year.
Open positions
Similar companies
Company identity and context are open; selected comparison metrics preview what is available on the platform.
| Company | Headquarters | Status | Employees | Total funding | Valuation |
|---|---|---|---|---|---|
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Massy, France | Operational | 163 | $76M | $220M |
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 Equal1Develops and manufactures silicon-based, rack-mounted quantum computers designed for integration |
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 IQMEuropean leader in superconducting quantum computers |
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 Sparrow QuantumOn-chip single-photon sources for quantum technologies. |
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 PasqalFull-stack neutral atom quantum computing systems |
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 eleQtronMicrowave-controlled, trapped-ion quantum computing. |
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 QuantwareScalable superconducting quantum processors for quantum computers. |
Delft, Netherlands | Operational |
Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed4 investors entered at this stage
HTGF
Speedinvest
Quantonation
European Innovation Council
Series A3 investors entered at this stage
EIC Fund
Delft Enterprises
Ground State Ventures
Other known investors5 additional known investors
TU Delft
Creative Destruction Lab- DEDelft University of Technology Endowment
Falling Walls Foundation
MK Venture Capital
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about QphoX on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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