Duquesne Family Office Invests in Q.ANT to Advance Sustainable Photonic AI Computing

The Stuttgart-based photonic computing pioneer Q.ANT announced the second closing of its Series A funding round with an additional investment from Duquesne Family Office LLC, the investment firm of Stanley F. Druckenmiller. This investment brings Q.ANT's total funding to $80 million, representing the largest financing round for photonic computing in Europe. The capital will accelerate commercialization of Q.ANT's light-based processors, drive next-stage technology development to improve AI infrastructure, and support the company's expansion into the U.S. market.

The timing of this investment coincides with growing concerns about the sustainability of AI infrastructure. Worldwide spending on AI-related data center infrastructure is projected to exceed $5.2 trillion over the next five years according to a McKinsey forecast cited in The Economist. However, this explosive growth faces a critical constraint: energy consumption. As data centers consume increasing shares of national power grids, efficiency has become the defining limitation on AI progress.

Q.ANT addresses this fundamental challenge through its photonic processors that compute natively with light. These processors deliver the precision and performance that AI and high-performance computing demand while requiring only a fraction of the energy consumed by traditional electronic chips. Dr. Michael Förtsch, founder and CEO of Q.ANT, emphasized that "AI is pushing the limits of global resources - energy, hardware, and capital. At Q.ANT, we achieve performance through efficiency, not brute power alone, redefining how AI can scale."

The company has achieved a significant technological milestone by bringing to market the world's first commercial photonic processor for real-world AI and HPC workloads. Built on Thin-Film Lithium Niobate material, the Q.ANT Native Processing Server integrates seamlessly into existing data centers as a plug-in co-processor. Early benchmarks demonstrate remarkable improvements: up to 30x greater energy efficiency, 50x performance gains, and the potential to increase data center capacity by 100x without requiring active cooling systems.

Industry analysis supports the strategic importance of photonic computing. Gartner's Emerging Tech: Emergence Cycle for Generative AI report states that "conventional computing systems are severely constrained when it comes to solving the emerging information processing challenges posed by GenAI." The report further notes that "photonic computing has several potential benefits over electronic computing, including increased bandwidth, processing power and storage, all while keeping energy and power consumption under control."

Q.ANT's technology achieves 16-bit floating-point accuracy equivalent to modern digital processors while maintaining the continuous advantages of analog computing. This combination of precision, performance, and industry integration represents a breakthrough in sustainable computing platforms. The company's Photonic Native Processing Server is currently being evaluated by leading supercomputing data centers and is fully compatible with today's programming languages and AI software frameworks.

Duquesne Family Office joins current lead investors including Cherry Ventures, UVC Partners, and imec.xpand, along with other deep tech investors. As part of the investment, Sue Meng, Managing Director at Duquesne Family Office, will join Q.ANT's advisory board as an observer. By 2030, Q.ANT aims to establish photonic processing as a foundational pillar of global AI systems, potentially transforming how the world approaches computational scalability and energy efficiency in an increasingly AI-driven economy.