QuantumDiamonds Secures €91M in EU Chips Act Funding to Scale Quantum-Based Semiconductor Inspection

Munich-based hardware developer QuantumDiamonds has secured €91 million in fresh capital to scale the serial production of its quantum-based semiconductor inspection equipment. The financing package combines a €15 million Series A equity round led by World Fund with a massive €76 million non-dilutive manufacturing grant. This public capital pool was approved at the European Union level under the European Chips Act, jointly funded by the German Federal Ministry for Economic Affairs and Energy and the Free State of Bavaria.[1]

The massive public grant marks a historic milestone for the European tech ecosystem. Until now, manufacturing subsidies under the European Chips Act have been exclusively reserved for established industrial infrastructure anchors like GlobalFoundries, STMicroelectronics, and Carl Zeiss. By securing this funding, QuantumDiamonds becomes the first and only early-stage startup to receive dedicated manufacturing subsidies under the Act, signaling a major shift in how the bloc supports emerging deep-tech hardware.

The strategic calculus behind the European Commission's decision is rooted in supply chain sovereignty. Currently, Europe consumes roughly 20 percent of the world's semiconductors but manufactures only about 10 percent of them. European policymakers view QuantumDiamonds as a potential homegrown champion in the $104 billion semiconductor equipment market—a company that could eventually rival the strategic importance of Dutch lithography giant ASML by controlling a critical chokepoint in the global AI hardware supply chain.

QuantumDiamonds is targeting one of the most expensive bottlenecks in modern semiconductor manufacturing: yield. As chipmakers pack billions of transistors into increasingly microscopic, three-dimensional architectures and advanced packaging configurations, physical defects are becoming harder to spot. In high-volume semiconductor production, improving the yield—the percentage of chips on a wafer that function perfectly—by just a single percentage point can save a manufacturer millions of dollars every week.[1][3]

Traditional inspection tools are struggling to keep pace with this architectural complexity. Conventional optical and X-ray inspection methods are highly effective at scanning the surface of a wafer, but they often fail to diagnose hidden physical defects buried deep inside multi-layered 3D chip structures. Finding these hidden faults often requires destructive testing, which slows down development cycles and destroys the very components engineers are trying to evaluate.[2]

Founded in 2022 by Kevin Berghoff and Dr. Fleming Bruckmaier as a spin-out from the Technical University of Munich, QuantumDiamonds bypasses these optical limitations entirely. Instead of trying to "see" the physical structure of the chip with light or radiation, the company uses quantum sensing technology to measure the invisible forces generated by the chip's operation.[1]

The core of this technology relies on synthetic diamonds engineered with atomic-scale flaws known as nitrogen-vacancy (NV) centers. An NV center is created when a nitrogen atom replaces a carbon atom in the diamond's crystal lattice, sitting adjacent to an empty space or vacancy. These specific atomic defects possess unique quantum mechanical properties that make them extraordinarily sensitive to their surrounding environment.[2]

When illuminated with a specific wavelength of laser light, the electrons trapped within these NV centers emit red fluorescence. Crucially, the intensity of this emitted light changes dramatically in the presence of even the faintest magnetic fields. By measuring these subtle shifts in fluorescence, the synthetic diamond acts as a hyper-sensitive, atomic-scale magnetometer.[2][3]

QuantumDiamonds applies this principle directly to semiconductor inspection through its flagship QDm.1 system. Because every electrical current generates a corresponding magnetic field, the QDm.1 system can map the exact flow of electricity through a chip in three dimensions. By hovering the quantum-grade diamond substrate over an active semiconductor, the system translates the localized vector magnetic fields into a high-resolution map of the chip's internal electrical pathways.[3]

The result is a non-destructive, nanoscale current microscope. Instead of slicing a chip open to find a physical break, engineers can simply watch the electricity flow. The system can instantly identify where a current stops unexpectedly (an open connection), where it jumps to the wrong pathway (a short circuit), or where it bleeds into surrounding materials (leakage currents), all without damaging the wafer.[1][2]

The time savings generated by this approach are profound. In one early deployment, a Tier 1 U.S. chip designer utilized the QuantumDiamonds technology to evaluate a highly complex semiconductor that had been failing in tests. According to the startup's executives, the chipmaker reported that they had been trying to debug the specific chip for six weeks using conventional methods; the quantum sensor pinpointed the exact location and depth of the defect in under a minute.[3]

This dramatic reduction in failure analysis time has driven rapid adoption across the industry. QuantumDiamonds is currently engaged in testing and deployment with nine of the world's ten largest semiconductor manufacturers. Over the past few months, the company has expanded its global footprint, installing its first U.S. system at Eurofins EAG Laboratories in California and establishing an Asian headquarters in Taiwan with a deployment at Integrated Service Technology in Hsinchu.[1]

Despite this early traction, the company faces a significant engineering hurdle as it attempts to scale. Currently, the technology is primarily used for lab-based failure analysis on individual chip samples. The ultimate goal—and the justification for the massive EU subsidy—is to advance the technology to inline, high-throughput wafer-level inspection directly on the fab floor. Operating delicate quantum sensors in the vibration-heavy, rapid-fire environment of a commercial cleanroom presents a fundamentally different physics and engineering challenge than operating them in a quiet laboratory.[2]

To bridge this gap, QuantumDiamonds will use the €91 million injection to rapidly expand its infrastructure. The 70-person firm plans to more than double its engineering workforce over the next 12 months. More importantly, the funding will support the construction of a €152 million automated production facility in eastern Munich, which will manufacture both the quantum-grade diamond substrates and the heavy inspection machinery at an industrial scale.[1]

The first operational section of the Munich facility is slated to open later this year. If QuantumDiamonds can successfully transition its quantum current microscopes from the laboratory to the high-throughput fabrication line, it will not only solve a multi-billion-dollar yield crisis for global chipmakers, but it will also firmly anchor a critical piece of the next-generation semiconductor supply chain in Europe.[2]