Duquesne family office invests in Q.ANT’s $80M Series A

Q.ANT has secured an additional investment from Duquesne Family Office LLC, bringing the company’s total Series A funding to $80 million, the largest photonic computing financing round in Europe. This represents a significant expansion from the company’s initial Series A close, as Q.ANT had previously raised €62 million in Series A funding in July 2025 to scale its energy-efficient photonic processors for AI and high-performance computing. The additional capital injection, believed to be $18 million, will help accelerate the 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.

Q.ANT’s light-based processors, built on thin-film lithium niobate, offer up to 30 times higher energy efficiency and 50 times the performance gains compared to conventional chips. The Q.ANT Native Processing Server integrates seamlessly as a plug-in co-processor into existing data centers, with early benchmarks showing potential for 100 times greater capacity increases, all without active cooling. Most notably, Q.ANT has achieved 16-bit floating-point accuracy equivalent to that of modern digital processors, while maintaining the advantages of analog computing. This achievement makes it the first company to combine this level of precision, performance, and industry integration. In July 2025, Q.ANT delivered its Native Processing Server to the Leibniz Supercomputing Centre (LRZ), marking the first integration of an analog photonic co-processor into an operational high-performance computing environment for real-world AI and simulation workload evaluation.

Further investors of Q.ANT include renowned investors like Cherry Ventures, UVC Partners, imec.xpand, L-Bank – Staatsbank für Baden-Württemberg, Verve Ventures, GRAZIA EQUITY, EXF Alpha, Venionaire Capital AG, LEA Partners, Onsight Ventures and TRUMPF.

Duquesne Family Office: The Druckenmiller investment firm

Duquesne Family Office is the investment firm of billionaire investor Stanley F. Druckenmiller, established in 2010 after he closed his Duquesne Capital hedge fund. The family office manages a multi-billion portfolio in 13F securities and allocates a significant share of its portfolio to healthcare and technology companies, pursuing high-conviction investments across both public and private markets. As part of the transaction, Sue Meng, a managing director at Duquesne Family Office, will join Q.ANT’s advisory board as an observer, bringing strategic expertise to the company’s leadership. While the family office also invested in Israeli biotech firm Immunai in 2021, it is rather focused on public securities.

Picture Source: Planet Volumes (03.11.2025)
Article Source: Q.ANT (03.11.2025) , QuantumInsider (03.11.2025)