Led · Seed · Jul 2026

Arq develops networking hardware for the quantum internet, combining rare-earth-doped-crystal-based quantum memories with photon-pair sources to enable long-distance quantum communication over fibre. Its core approach uses multiplexing to store and transmit multiple photons simultaneously, aiming to improve speed and efficiency of quantum links. The company is building quantum repeaters intended to connect quantum computers across long distances. Arq targets applications in telecommunications, financial services, pharmaceuticals and healthcare and is working with research institutions, quantum technology companies and public organisations. Founded in 2025 by Samuele Grandi and Emanuele Distante, the company recently raised $1.4 million in a pre-seed round to fund a laboratory build-out and further development of its quantum memory devices. The articles do not report revenue, user counts, or other operating metrics.

Participated · Series B · May 2026

QuantWare develops modular quantum processors built on its proprietary VIO architecture and has introduced the VIO-40K design aimed at higher qubit capacity. The company produces commercially available quantum processing units at industrial scale and follows an open approach that allows third parties to build and integrate their own designs. QuantWare was founded by researchers from QuTech and is expanding manufacturing capability in Europe through KiloFab, a dedicated facility in the Netherlands. Following its €152 million Series B, the company plans to scale both processor development and industrial production. Management frames these steps as accelerating the transition of quantum computing from research toward large-scale commercial deployment.