Vexlum grows its European presence and appoints Dr. Stefan Truppe as Managing Director of Vexlum UK
The expansion establishes Vexlum’s first UK R&D operation, strengthening its participation in the country’s rapidly growing quantum technology supply chain in support of the UK’s £2.5 billion National Quantum Strategy.
LONDON, UK (July 21st, 2026) – Vexlum, the global leader in high-power semiconductor Vertical-External-Cavity Surface-Emitting Laser (VECSEL) technology, has announced the appointment of Dr. Stefan Truppe as Managing Director of Vexlum UK. The appointment coincides with the establishment of a dedicated Vexlum laboratory in London, positioning the company at the center of the UK’s rapidly growing quantum ecosystem.
The expansion follows a significant surge in local demand for Vexlum’s VXL laser system. As a compact, two-liter laser engine that replaces traditional large laboratory instrumentation, the Vexlum lasers have become a critical component for UK-based research into neutral-atom and trapped-ion quantum computing. By establishing a permanent presence in London, Vexlum will provide localized technical support and collaborative R&D capabilities to its expanding UK client base.
The laboratory will support laser development, testing, and technical validation for UK customers while providing a local base for collaborative research and product development with partners across the UK quantum ecosystem. The facility will house laser development and testing equipment to configure, validate, and optimize systems for UK customers, while supporting ongoing product development.
The new UK operation combines commercial activities with local research and development capabilities, enabling Vexlum to contribute more directly to the UK’s emerging quantum technology supply chain. Rather than operating solely as a sales office, the company is establishing engineering and R&D capabilities alongside customer support and industrial collaboration.
“The UK has built one of the world’s most dynamic quantum ecosystems,” said Jussi-Pekka Penttinen, CEO and Co-founder of Vexlum. “Following our recent funding round, we’re investing in local engineering and R&D capabilities so we can better support our growing UK customer base while becoming an active contributor to the UK’s quantum technology supply chain. Stefan’s appointment gives us exceptional scientific leadership and strengthens our ability to build long-term partnerships across the UK quantum ecosystem.”
Dr. Truppe joins Vexlum from Imperial College London, where he will continue to serve as an Associate Professor in the Department of Physics, while also leading Vexlum UK’s strategic growth and industrial partnerships. A pioneer in the use of deep ultraviolet (UV) lasers for cooling gases of atoms and diatomic molecules to near absolute zero, Dr. Truppe’s expertise aligns perfectly with Vexlum’s mission to provide high-power laser engines at any wavelength.
“Vexlum’s Finland-based in-house manufacturing—from III-V semiconductor fabrication to final laser assembly—gives us unmatched quality control,” said Dr. Truppe. “My goal is to make Vexlum the definitive voice for VECSEL excellence in the UK. By integrating our compact VXL engines into the UK’s quantum and semiconductor supply chains, we’re helping partners overcome the laser bottlenecks that have long slowed ultracold matter experiments and quantum sensors.”
Vexlum’s technology carries a prestigious “Nobel heritage,” originating from a collaboration between semiconductor experts at Tampere University and the quantum research group of Nobel laureate David Wineland at NIST. This foundation has allowed Vexlum to diversify its VECSEL portfolio into high-growth sectors beyond quantum computing, including semiconductor metrology and space communications.
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Technical Definitions
- Vertical-External-Cavity Surface-Emitting Laser (VECSEL): A laser system using a semiconductor light source with an external optical cavity, characterized by high output power, excellent beam quality, and single-frequency operation.
- Neutral-atom Quantum Computer: An architecture using electrically neutral atoms as qubits, manipulated and controlled via laser light.
- Visible/UV Range: Visible light generally ranges from 380 to 780 nm; Ultraviolet (UV) light is shorter, typically ranging from 300 to 400 nm.
Vexlum Contact
Jussi-Pekka Penttinen, CEO
Email: contact@vexlum.com
Vexlum
Vexlum is a Finnish deep-tech company specializing in high-power semiconductor laser systems based on an innovative Vertical-External-Cavity Surface-Emitting Laser (VECSEL) technology. Spun out from Tampere University in Finland, Vexlum develops and manufactures cutting-edge lasers that offer unmatched performance in terms of system size, laser power, and cost for demanding applications in industries such as quantum technology, medicine, scientific research, and the semiconductor industry. For more information, visit www.vexlum.com.