Welinq has today, February 4th, 2026, launched its high-performance, rack-mounted Entangled Photon Pair Source and confirmed its first commercial delivery to a leading European institution – a pivotal step towards building practical quantum networks. The Paris-based company’s new source reliably generates entangled photons, essential for secure communications and interconnecting quantum computers, and is designed to integrate seamlessly with existing fiber infrastructure. This advancement addresses a critical need for scalable entanglement generation, moving quantum technologies beyond laboratory settings and into real-world applications. “With this sale, we are not only demonstrating the viability of our technology, but also its strategic importance in building the quantum infrastructures of tomorrow,” said Tom Darras, CEO and co-founder of Welinq, signaling a new era for quantum networking infrastructure in Europe and beyond.
Welinq’s Entangled Photon Pair Source Launch & Delivery
Welinq, headquartered in Paris, France, commercially launched its rack-mounted Entangled Photon Pair Source on February 4th, 2026, simultaneously announcing the delivery of its inaugural unit to a prominent European institution. This achievement signifies a crucial progression in building functional quantum infrastructure, offering a readily integrable solution for both businesses and research facilities. The source is engineered to reliably generate entangled photons, essential for bolstering secure communications and facilitating interconnectivity between quantum computers, addressing a key demand for scalable entanglement generation across quantum networks.
Designed for broad compatibility, Welinq’s source supports multiple quantum computing modalities, establishing it as a fundamental element in next-generation quantum infrastructures. Beyond the photon pair source, Welinq also delivers its QDrive quantum memory to customers like SkQCI, providing interoperable components for on-premise quantum networking systems. Founded in 2022 as a spin-off from Sorbonne University, CNRS, and PSL University by Darras, Julien Laurat, and Eleni Diamanti, Welinq is expanding its reach into the USA and Asia.
Quantum Memory & Full-Stack Infrastructure Solutions
Welinq is rapidly moving quantum networking beyond laboratory settings with the commercial availability of its rack-mounted Entangled Photon Pair Source and QDrive quantum memory, recently delivered to SkQCI. This delivery signifies a shift towards engineered, production-ready modules for end users, confirming strong market validation within Europe and signalling expansion into the USA and Asia. The company’s focus extends beyond individual components, offering a comprehensive technology stack including software for algorithm partitioning and interfaces between qubits and photons. The Entangled Photon Pair Source is designed for compatibility with diverse quantum computing modalities and deployment within existing fiber infrastructures, enabling secure communications and quantum computer interconnects.
With this sale, we are not only demonstrating the viability of our technology, but also its strategic importance in building the quantum infrastructures of tomorrow.
Tom Darras, CEO and co-founder of Welinq
