A new consortium led by QuiX Quantum, Vtec, and the Center for Integrated Technology and Chips (CITC) has launched the QuLight Detection project to address one of the most persistent bottlenecks in photonic quantum computing: scalable single-photon detection. QuiX brings established leadership in photonic quantum processors, Vtec contributes expertise in photonic chip design and fabrication, and CITC anchors the effort with its packaging, integration and semiconductor ecosystem development role in the eastern Netherlands. Together, these organizations aim to deliver a manufacturable, non-cryogenic alternative to today’s cryogenic SNSPD detectors—an advance that would materially lower the size, cost and power barriers limiting commercial-scale photonic quantum computers.
The project centers on a new Single Photon Detector (SPD) architecture based on highly efficient Single Photon Avalanche Detectors (SPADs). Unlike SNSPDs, SPADs operate without cryostats, enabling a tenfold reduction in energy consumption, a thirtyfold decrease in size, and a tenfold decrease in cost. With photonic quantum computers often requiring thousands of detection channels to read out quantum states, the industry has been searching for a more scalable and economically viable approach. The consortium aims to increase detector efficiency and improve light-coupling from quantum processors, ultimately replacing up to half of the detectors currently required in typical photonic quantum systems.
CITC’s packaging and PIC-integration capabilities complement QuiX’s processor experience and Vtec’s design and fabrication strengths. By merging these competencies, the QuLight Detection project is expected to advance SPAD performance while reducing coupling losses—key requirements for scaling PQCs into industrial-grade systems. The initiative also reinforces the broader high-tech innovation ecosystem in the eastern Netherlands by strengthening SME collaboration and expanding regional expertise in chip integration, quantum technologies and photonics manufacturing.
• Targets SPAD detectors with 10× lower energy use, 30× smaller footprint and 10× lower cost than SNSPDs
• Aims to replace up to half of detectors typically required in photonic quantum computers
• Focuses on improved detector efficiency and reduced coupling losses
• Leverages combined expertise in PIC design, packaging and quantum processor technology
• Strengthens SME cooperation and regional semiconductor innovation through CITC
“Our goal is to drive major improvements in SPAD performance while reducing coupling losses, enabling scalable photonic quantum computers,” the consortium said.
🌐 Analysis: The project highlights a growing shift toward non-cryogenic detection technologies—an area increasingly viewed as essential for scaling photonic quantum computing beyond small-volume research systems. The Netherlands continues to build momentum in PIC-based quantum platforms, complementing recent commercial and academic initiatives across Europe and competing global efforts in integrated quantum photonics.
