IN Brief:
- SEALSQ is extending a quantum investment programme positioned at over $100m.
- EeroQ’s electrons-on-helium approach targets scalable control, and CMOS-compatible fabrication.
- The partnership is framed around an integrated security stack spanning PQC, PKI, and QPUs.
SEALSQ Corp has made an additional strategic investment in EeroQ, extending an initial stake taken in December 2025. The Geneva-headquartered company, which trades on NASDAQ as LAES, has positioned the deal within its “Quantum Made in USA” strategy, and a wider investment platform branded SEALQUANTUM.com.
EeroQ is pursuing a quantum processing approach based on trapping single electrons on the surface of superfluid helium, and using their spin states as qubits. The concept is not new, but EeroQ’s pitch is rooted in a practical scaling argument: if qubits can be moved around the chip, and addressed through a compact set of control signals, the architecture can avoid the wiring density, and cryogenic heat-load penalties that become dominant when systems move beyond laboratory-scale devices.
The company has recently highlighted its “Wonder Lake” platform as evidence that the control side of the problem is not academic. In a public description of the work, EeroQ said it has demonstrated a control architecture intended to scale to one million qubits using fewer than 50 physical control lines, a direct attack on the so-called wire problem that forces other modalities into increasingly complex cabling, packaging, and thermal design.
In EeroQ’s implementation, electrons are transported across the chip between functional regions such as readout, storage, and operation zones. The company has described the motion control as analogous to classical charge-coupled devices, using phased voltages to step charges across electrode structures. It has also stated that the Wonder Lake device was manufactured at SkyWater Technology, using a 130 nm process, aligning with the company’s stated intent to remain within conventional semiconductor fabrication constraints where possible.
SEALSQ has set the investment alongside a planned demonstration at its Quantum Center of Excellence in Geneva. The company said the objective is an end-to-end showcase spanning secure semiconductor hardware, post-quantum cryptography, and emerging quantum processors, aimed at organisations assessing future secure infrastructure requirements.
Carlos Moreira, founder and CEO of SEALSQ, said: “This extended investment in EeroQ marks a significant milestone in SEALSQ’s Quantum Made in USA strategy and in the establishment of our Quantum Highway. EeroQ’s helium-based quantum architecture, combined with its breakthrough control scalability, stands out as one of the most promising designs we have evaluated.”
SEALSQ has also used the announcement to restate the breadth of its wider quantum security push, including a post-quantum semiconductor personalisation and test centre planned for Murcia, Spain, alongside other investments, and an ASIC design acquisition intended to support “quantum-ready” silicon.
Nick Farina, co-founder and CEO of EeroQ, said: “EeroQ was designed from the ground up to scale using the mature CMOS fabrication ecosystem while overcoming fundamental barriers such as the wire problem.”
The deal lands as post-quantum cryptography moves from roadmap to procurement constraint, with NIST having published its first post-quantum cryptography standards in August 2024. In that context, investment logic that couples prospective quantum compute capability with deployable quantum-resistant security hardware is starting to look less like future-proofing, and more like avoiding an avoidable refit.
