€115M Series A Backs Quobly’s Quantum Processor Scale-Up

ST Microelectronics is leading a €115 million Series A funding round for Quobly, with significant participation from SEALSQ, indicating a major push to industrialize silicon-based quantum processor development in Europe. The investment, made through the expanding SEALSQ Quantum Fund, which has grown to 200 million from an initial 20 million allocation since February, will support Quobly’s efforts to deploy its first commercial quantum systems and deepen a technical partnership established last November. As part of the deal, Carlos Moreira, CEO of SEALSQ, will join Quobly’s Board of Directors. “SEALSQ’s participation as a lead investor in Quobly’s Series A financing represents a significant milestone in the execution of our Quantum Vertical Sovereign Stack strategy,” said Moreira, emphasizing a shared commitment to secure quantum technologies.

SEALSQ Quantum Fund Fuels €115 Million Quobly Series A

This investment, channeled through the SEALSQ Quantum Fund, signifies a strategic move to develop sovereign quantum infrastructure and secure quantum technologies. ST Microelectronics spearheaded the Series A round, joined by SEALSQ, Isalt and BPI France, demonstrating the involvement of established semiconductor industry players in scaling quantum processor industrialization. This funding builds upon a technical partnership initiated between SEALSQ and Quobly in November, focused on integrating post-quantum cryptography and hardware Root-of-Trust into quantum architectures. The collaboration aims to create secure quantum computing systems, safeguarding against present and future quantum threats by combining Quobly’s FD-SOI processors with SEALSQ’s quantum-resistant secure chips like the QVault TPM.

Quobly Advances Silicon-Based Quantum Processors with FD-SOI

Quobly is scaling production of its silicon-based quantum processors, leveraging fully depleted silicon-on-insulator (FD-SOI) technology to address the growing demand for practical quantum computing systems. While superconducting and trapped-ion approaches currently receive more attention, Quobly’s focus on established semiconductor manufacturing offers a potentially faster path to industrialization and scalability, building on fifteen years of collaborative research between CEA-Leti and CNRS. The company recently secured €115 million in Series A funding, led by ST Microelectronics, SEALSQ, Isalt, and BPI France, demonstrating increasing investor confidence in silicon quantum technology. This investment directly supports Quobly’s efforts to move beyond research and development toward commercial deployment of its processors. The partnership aims to integrate post-quantum cryptography and hardware Root-of-Trust into Quobly’s silicon architectures, creating secure-by-design quantum computing systems. Maud Vinet, CEO and co-founder of Quobly, added, “This investment from SEALSQ builds on the technical collaboration initiated in November and supports our transition toward industrial deployment.” Quobly’s Q100T program was advanced by a prior €21 million raise, and the company maintains offices in France, Singapore, and Canada.

The move signifies a strategic alignment focused on building secure quantum systems “from qubit to root of trust,” according to company statements. This collaboration is a key component of SEALSQ’s broader “Quantum Vertical Sovereign Stack” strategy, encompassing hardware security, semiconductors, and secure quantum processing.

The escalating race to build practical quantum computers is receiving a substantial financial boost, with the SEALSQ Quantum Fund now totaling 200 million, a dramatic increase from its initial 20 million allocation in February. This rapid expansion signals strong investor confidence in the burgeoning quantum technology sector and highlights the growing need for secure quantum infrastructure. This investment isn’t simply about capital; it’s about strategic alignment.