Explore: Cybersecurity · Pre-Seed · Spain
Arq Quantum Technologies
pre-seed · 🇪🇸 Barcelona, Spain · Founded 2025 · 1-10 employees
Spanish quantum networking startup developing long-distance quantum communication hardware using multiplexed quantum repeaters based on rare-earth doped crystal memories. Arq Quantum Technologies is a deeptech and quantum startup based in Barcelona, Spain, founded 2025, at pre-seed stage, with $1.4M raised to date.
Arq Quantum Technologies 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
Their multiplexed quantum repeater based on rare-earth-doped crystal memories achieves reliable long-distance connectivity faster and at lower cost than existing quantum networking approaches.
Target customer
telecom operators, finance, pharma, and healthcare sectors needing secure long-distance quantum communication
Sectors
Funding rounds
Key investors
Ground State Ventures, Big Sur Ventures
Notable achievements
- Selected for Horizon Deep Tech Summit startup competition in Madrid (November 2025)
- Recognized as a Deep Tech Pioneer in the first stage of Hello Tomorrow Global Challenge among 4,800+ companies
- Raised $1.4 million pre-seed funding round led by Ground State Ventures with participation from Big Sur Ventures
- Building upon breakthrough achievements including the first multiplexed telecom-compatible quantum repeater and first light-matter entanglement transmission over tens of kilometers of optical fiber
Frequently asked questions
- What does Arq Quantum Technologies do?
- Spanish quantum networking startup developing long-distance quantum communication hardware using multiplexed quantum repeaters based on rare-earth doped crystal memories.
- Where is Arq Quantum Technologies based?
- Arq Quantum Technologies is based in Barcelona, Spain, founded in 2025.
- How much has Arq Quantum Technologies raised?
- Arq Quantum Technologies has raised $1.4M in tracked funding and is currently at the pre-seed stage.
- Who has invested in Arq Quantum Technologies?
- Investors in Arq Quantum Technologies include Ground State Ventures and Big Sur Ventures.