Arq Quantum Technologies is a Barcelona-based deep-tech startup building quantum repeater hardware for the quantum internet. It was formally incorporated in September 2025 and publicly launched in March 2026.
Arq uses rare-earth ions to enable massively multiplexed quantum network nodes, a requirement for long-distance quantum communication. The company contributes to the Quantum Internet Alliance (QIA) project, developing hardware for linking quantum computers and building functional prototype quantum networks. It treats rare-earth-based quantum repeater technology as the path to scalable quantum networks. Update 2026-03-03: Arq Quantum Technologies has begun developing rare-earth-based quantum repeaters for the quantum internet. Source: https://quantumzeitgeist.com/arq-quantum-technologies-repeater-launch/
Quantum Specifications
Quantum Focus
hardware
Backed By
Lakestar
Lightspeed Venture Partners
Quantum Coast Capital
Type One Ventures
Trumpf Venture
Gic Government Of Singapore Investment Corporation
Hercules Capital
Inven Capital
Frequently Asked Questions
Arq Quantum Technologies is a Barcelona-based deep-tech startup building quantum repeater hardware for the quantum internet. It was formally incorporated in September 2025 and publicly launched in March 2026.
Arq uses rare-earth ions to enable massively multiplexed quantum network nodes, a requirement for long-distance quantum communication. The company contributes to the Quantum Internet Alliance (QIA) project, developing hardware for linking quantum computers and building functional protot...
Arq Quantum Technologies is headquartered in Barcelona, Spain.
Arq Quantum Technologies was founded in 2025.
Arq Quantum Technologies operates in the following sectors: quantum networking, quantum communications, quantum hardware.
