SEALSQ Corp. announced the integration of its Quantum Vertical Stack scheduled to be launched during the SEALSQ Quantum Day in the third quarter of 2026. The Company plans to present for the first time a fully integrated, end-to-end quantum technology ecosystem spanning from silicon-level Root of Trust to distributed quantum computing, global quantum networking, and space-based quantum infrastructure.
The SEALSQ Quantum Vertical Stack will be a landmark achievement for the quantum technology industry: a vertically integrated architecture in which every critical layer, from the first transistors of a quantum-resistant secure chip to the last photon of a globally entangled orbital network, is designed, secured, and governed by SEALSQ. No other company in the world currently offers a comparable depth of integration across quantum hardware, quantum security, quantum interconnects, quantum sensing, and quantum-from-space services. The SEALSQ Quantum Vertical Stack is structured as four foundational security layers and three operational quantum verticals, unified by the SEALQuantum photonic interconnect platform and capped by the Quantum Spatial Orbital Cloud (QSOC): Silicon Root of Trust (L1): SEALSQ?s secure elements, Trusted Platform Modules (TPMs), RISC-V secure microcontrollers, and quantum-resistant ASICs design capacity by IC?ALPS provide hardware-anchored identity, tamper-resistant key storage, secure boot, and firmware validation for every component in the quantum computing ecosystem, from cryogenic quantum processors to cloud orchestration platforms. SEALSQ?s cybersecurity technologies are already deployed in more than 1,700,000,000 devices worldwide.
Post-Quantum Cryptography (L2): The INeS PKI infrastructure issues and manages post-quantum certificates compliant with NIST-standardized algorithms, CRYSTALS-Kyber (ML-KEM), CRYSTALS-Dilithium (ML-DSA), and SPHINCS+ (SLH-DSA), ready to be embedded directly at the silicon level. SEALSQ?s PQC stack is fully aligned with NSA CNSA 2.0 requirements and the NIST post-quantum migration timeline mandating completion by 2030. Quantum Hardware (L3): Through strategic investments in EeroQ (electrons-on-helium quantum processors, USA) and a collaboration with Quobly (silicon spin qubits, France/EU), SEALSQ has secured collaboration with two of the most promising CMOS-compatible quantum computing architectures in the world.
Both platforms will be compatible and able to integrate with SEALSQ?s post-quantum secure elements, aiming to create the world?s first secure-by-design quantum processor programs. SEALQuantum Photonic Interconnect (L4): The pending acquisition of Miraex SA, EPFL Innovation Park, Switzerland aims to bring a revolutionary Thin Film Lithium Tantalate (TFLT) Photonic Integrated Circuit (PIC) platform into the SEALSQ ecosystem. This technology is among the very few in the world capable of converting quantum information between the microwave domain of superconducting quantum processors and the optical domain of fiber-optic quantum networks, bridging a frequency gap of 10,000×. Distributed Quantum Computing (DQC): The SEALQuantum transduction platform interconnects physically separated quantum processors through photonic entanglement, enabling remote gate execution via quantum teleportation protocols.
This architecture scales effective qubit counts without requiring increasingly large individual processors, mirroring the evolution from monolithic supercomputers to distributed computing clusters, and does so within a security architecture governed by SEALSQ?s PQC and RoT stack. Global Quantum Networking: Quantum repeater nodes, entanglement swapping, and satellite-mediated intercontinental entanglement distribution form the physical backbone of the future quantum internet. The QSOC orbital layer extends terrestrial quantum networks to planetary scale, enabling device-independent quantum key distribution and blind quantum computation services from orbit.
SEALSQ Quantum Fund portfolio company EeroQ, in collaboration with Conductor Quantum and NVIDIA, recently demonstrated the world?s first autonomous quantum computing laboratory, a self-operating quantum experimental system in which quantum experiments are executed, monitored, and optimized by AI using natural language prompts. NVIDIA?s Ising platform, the world?s first open-source AI family purpose-built for quantum computing challenges including calibration and error correction, was directly connected to EeroQ?s live quantum hardware. Quobly Collaboration (November 2025): SEALSQ and Quobly, the Grenoble-based silicon spin qubit pioneer built on 15 years of CEA-Leti and CNRS research and backed by STMicroelectronics, announced their ambition to become the first companies globally to explore hardware Root-of-Trust and post-quantum cryptography natively integrated into large-scale, fault-tolerant silicon quantum processors.
A joint Proof of Concept is planned at the SEALSQ Quantum Center of Excellence in Geneva. QSOC Launch and WISeSat Partnership (March 18, 2026): SEALSQ and WISeSat.Space Corp. announced the world?s first commercial Quantum Spatial Orbital Cloud, a planned 100-satellite LEO constellation delivering QKD, QRNG, and post-quantum digital identity services as a managed cloud subscription.
The first 15 next-generation 6U satellites are fully funded and expected operational by 2027, with the next satellite launching aboard SpaceX in June 2026 and the first 6U post-quantum platform launching in November 2026. Full Operational Capability with a contractually guaranteed 99.9% uptime SLA is targeted by 2033. Swiss Space Command Pilot Completion (April 13, 2026): WISeSat and SEALSQ completed a multi-year pilot phase in collaboration with the Space Command of the Swiss Armed Forces, validating key technical and operational foundations for sovereign, quantum-resilient space communications infrastructure.
The partnership, initiated in 2022 and deepened in 2024, culminated in satellite missions, payload integration, and secure communications testing. SEALQuantum Fund Expansion to $200 million (March 25, 2026): SEALSQ announced the expansion of its SEALQuantum Fund to $200 million, and has already deployed over $30 million across EeroQ, Quobly, IC?ALPS, SEALQuantum, WISeSat.Space, ColibriTD, Wecan Group, Quantix Edge Security (a Spanish government-backed joint venture with a ?40 million budget establishing Spain?s first post-quantum semiconductor personalization center), and Parrot SA (post-quantum cryptography integration into professional defense drones).
