• SEALSQ Corp(NASDAQ: LAES) has finalized a second strategic investment inEeroQ, a U.S.-based quantum hardware company developing an architecture based on electrons on superfluid helium (eHe). • This follow-on investment, executed through the SEALQUANTUM.com platform, builds upon SEALSQ’sinitial entry into EeroQ in December 2025. • The capital injection is part of a broader “Quantum Made in USA” strategy intended to establish a sovereign, vertical security stack that integrates post-quantum cryptography (PQC) with scalable quantum processing units (QPUs). • The eHe architecture utilizes electron spins trapped on a superfluid helium surface, a method that offers long coherence times and CMOS-compatible fabrication. • EeroQ recently validated a control architecture-centered on its Wonder Lake chip-capable of managing up to one million qubits using fewer than 50 physical control lines. • This addresses the “wire problem” inherent in superconducting and trapped-ion systems, where the thermal and physical overhead of thousands of individual coaxial cables often prevents large-scale integration.

Article Summaries:

  • SEALSQ Corp (NASDAQ: LAES) has completed a second strategic investment in U.S. quantum‑hardware firm EeroQ, following its initial stake in December 2025. The new capital, raised via SEALQUANTUM.com, supports SEALSQ’s “Quantum Made in USA” strategy to build a sovereign, vertical security stack that couples post‑quantum cryptography (PQC) with scalable quantum processors (QPUs). EeroQ’s electron‑on‑superfluid‑helium (eHe) architecture offers long coherence times and CMOS‑compatible fabrication, and its Wonder Lake chip now controls up to one million qubits using fewer than 50 physical lines, addressing the “wire problem” of other platforms. The partnership will develop a proof‑of‑concept at SEALSQ’s Quantum Center of Excellence in Geneva, demonstrating a complete “Quantum Security Vertical Stack” that links SEALSQ’s secure semiconductor hardware and PKI services with EeroQ’s quantum roadmap. The initiative aims to provide a trusted industrial pipeline for national‑security and critical‑infrastructure providers evaluating quantum‑resistant systems. (Feb 19 2026)

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