Arq
pre-seed · 🇪🇸 Barcelona, Spain · Founded 2025 · 1-10 employees
A quantum internet infrastructure company laying foundations for the quantum internet. Arq is a deeptech startup based in Barcelona, Spain, founded 2025, at pre-seed stage, with $1.4M raised to date.
Arq is tracked live on Scout, Fusion42's database of newly funded startups — its profile updates as new rounds, backers and Wire analysis land.
Total raised
$1.4M
Stage
pre-seed
Business model
hardware
Key differentiator
Arq is the only telecom-compatible multiplexed quantum repeater hardware with a demonstrated proof of concept, using native multidimensional multiplexing (temporal, spatial, spectral) combined with rare-earth-doped crystals.
Target customer
Telecom operators, research institutions, and government agencies building quantum networks
Sectors
Funding rounds
pre-seed
16 July 2026
Key investors
Quantum Internet Alliance (QIA)
Notable achievements
- Incorporated in September 2024 as a spinout from ICFO's Hugues de Riedmatten group
- Selected by the Quantum Internet Alliance (QIA) to build a quantum repeater node for the long-distance prototype
- Demonstrated proof of concept for telecom-compatible multiplexed quantum repeater hardware
Frequently asked questions
- What does Arq do?
- A quantum internet infrastructure company laying foundations for the quantum internet.
- Where is Arq based?
- Arq is based in Barcelona, Spain, founded in 2025.
- How much has Arq raised?
- Arq has raised $1.4M in tracked funding and is currently at the pre-seed stage.
- Who has invested in Arq?
- Investors in Arq include Quantum Internet Alliance (QIA).