SEALSQ invests again in EeroQ to scale million-qubit quantum chips under $100M fund
SEALSQ has made a second strategic investment in U.S.-based EeroQ under its $100 million SEALQUANTUM.com fund to advance helium-based quantum chip development. EeroQ recently demonstrated a control architecture managing one million qubits with fewer than 50 physical control lines, directly tackling quantum scalability challenges.
1. Second Strategic Investment in EeroQ
SEALSQ has deployed its second strategic investment in EeroQ, marking the latest use of its SEALQUANTUM.com Quantum Investment Fund, which was launched in 2025 with over $100 million committed. The initial stake was placed in December 2025 and this follow-on funding reinforces SEALSQ’s commitment to U.S.-sovereign quantum technologies.
2. EeroQ’s Million-Qubit Control Breakthrough
EeroQ’s electron-on-helium architecture recently demonstrated a control system capable of managing up to one million qubits using fewer than 50 physical control lines. This breakthrough addresses the critical ‘wire problem’ by drastically reducing cabling, thermal load and engineering complexity in large-scale quantum processors.
3. Advancement of Quantum Security Vertical Stack
This investment advances SEALSQ’s vision to build a full Quantum Security Vertical Stack, integrating secure semiconductors, post-quantum cryptography and next-generation quantum hardware. By combining EeroQ’s scalable qubit design with SEALSQ’s PKI and semiconductor expertise, the company aims to offer end-to-end quantum-ready platforms for national security and critical infrastructure.
4. Proof-of-Concept Demo at Geneva Quantum Center
SEALSQ and EeroQ plan to showcase a complete Proof-of-Concept at the SEALSQ Quantum Center of Excellence in Geneva. The demo will illustrate integration of secure semiconductor hardware, post-quantum cryptography and EeroQ’s quantum processors, providing a tangible reference for governments and enterprises evaluating sovereign quantum infrastructures.