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Vexlum establishes London lab and appoints Stefan Truppe as managing director of Vexlum UK
**Vexlum expands into UK quantum market with London lab and Stefan Truppe as managing director** Finland-based VECSEL laser developer Vexlum has opened a dedicated laboratory in London and appointed Dr Stefan Truppe as managing director of Vexlum UK, positioning the company at the center of the UK’s rapidly growing quantum ecosystem. The expansion follows surging demand for Vexlum’s compact VXL laser system—a 2-liter laser engine that replaces traditional large laboratory instrumentation—among UK researchers working on neutral-atom and trapped-ion quantum computing. The new London facility will provide localized technical support, laser development, testing, and collaborative R&D for UK customers, while integrating Vexlum into the UK’s emerging quantum technology supply chain. Rather than operating solely as a sales office, the lab combines commercial activities with engineering and R&D capabilities. “The UK has built one of the world’s most dynamic quantum ecosystems,” said Vexlum CEO and co-founder Jussi-Pekka Penttinen. “Following our recent funding round, we’re investing in local engineering and R&D so we can better support our growing UK customer base while becoming an active contributor to the UK’s quantum technology supply chain.” Truppe joins from Imperial College London, where he continues as an associate professor in physics. A pioneer in using deep UV lasers to cool gases of atoms and diatomic molecules to near absolute zero, his expertise aligns with Vexlum’s mission to deliver high-power laser engines at any wavelength. “Vexlum’s in-house manufacturing—from III-V semiconductor fabrication to final laser assembly—gives us unmatched quality control,” Truppe said. “My goal is to make Vexlum the definitive voice for VECSEL excellence in the UK, helping partners overcome laser bottlenecks that have long slowed ultracold matter experiments and quantum sensors.” Vexlum’s technology originated from a collaboration between Tampere University and Nobel laureate David Wineland’s group at NIST. The company has diversified its VECSEL portfolio into semiconductor metrology and space communications.