Large-Scale Photonic Quantum Computing Platform Technologies

Expected Outcome: This action will establish a strategic European initiative to develop scalable, modular, and interoperable photonic quantum computing platforms. Proposals for this topic are expected to address and provide credible solutions to at least two major technical roadblocks currently limiting the advancement of photonic quantum computing such as: The lack of deterministic, high-efficiency photonic entanglement and loss-tolerant architectures suitable for fault-tolerant scaling The absence of a standardised, integrated control stack combining photonic hardware, firmware, and system software with reliable benchmarking across platforms Project results are expected to contribute to the following expected outcomes: By 2028, demonstration of a photonic NISQ processor with ≥100 photonic qubits, integrating deterministic single-photon sources, low-loss waveguides, on-chip detectors, and a firmware stack (scheduler, controller, compiler), validated via hardware-agnostic benchmarks and hybrid photonic-HPC applications demonstrating classical-quantum crossover By 2030, delivery of a full-stack, high-connectivity photonic quantum computer, with modular scalability, integrated on-chip and fibre-based interconnects, and high-fidelity gates (e.g. error rates ≤10⁻³) with an indicative target of 1 000 photonic qubits, laying the groundwork for prototype demonstrations of quantum utility on industrially relevant workloads. System-level interoperability and standardisation, with published interface specifications across photonic quantum hardware and software stacks including packaging, APIs, compiler interfaces, and cloud protocols compatible with telecom wavelengths Validation of entanglement distribution across modules through standardised protocols and field-demonstration of interconnected photonic quantum processors Acceleration of industrialisation and commercialisation, including a roadmap for pilot manufacturing lines, quality assurance protocols, and development of a sovereign European supply chain for photonic quantum technologies Demonstration of project results through a concrete use case provided by a major end-user partner within the consortium, validating the platform’s relevance and performance under real operational constraints. Scope: Proposals for this topic are expected to be led by a startup with demonstrated expertise in photonic quantum computing. The startup should collaborate with relevant academic, industrial, and RTO partners to ensure both technological depth and market orientation. The consortium should also include at least one major end-user whose operational needs will shape the platform design, and whose infrastructure will host the field demonstration of the project’s results. Proposals should implement a coordinated, durable R&I programme that integrates hardware, software, system architecture, and application-level use cases. Activities should include: Platform development advancing open, scalable photonic quantum processors with semiconductor and/or glass-based photonic chips, integrated control electronics, firmware, and robust error mitigation and correction schemes System integration realising modular quantum nodes with photonic interconnects and validating scalable architectures under realistic noise, loss, and control constraints Software stack co-design integrating low-level firmware, compilers, hybrid algorithms, and network APIs to demonstrate application-level quantum advantage and HPC interoperability Proposals are expected to build upon prior Quantum Flagship results and demonstrate capacity to contribute actively to the governance and strategic coordination of the EU quantum computing ecosystem, including synergies with STEP, Chips JU, IPCEI projects and EuroHPC. Technology Readiness Level - Technology readiness level expected from completed projects Activities are expected to start at TRL 4 and achieve TRL 7 by the end of the project – see General Annex B.

Online Manual is your guide on the procedures from proposal submission to managing your grant. Horizon Europe Programme Guide contains the detailed guidance to the structure, budget and political priorities of Horizon Europe. Funding & Tenders Portal FAQ – find the answers to most frequently asked questions on submission of proposals, evaluation and grant management. Research Enquiry Service – ask questions about any aspect of European research in general and the EU Research Framework Programmes in particular. National Contact Points (NCPs) – get guidance, practical information and assistance on participation in Horizon Europe. There are also NCPs in many non-EU and non-associated countries (‘third-countries’). Enterprise Europe Network – contact your EEN national contact for advice to businesses with special focus on SMEs. The support includes guidance on the EU research funding. IT Helpdesk – contact the Funding & Tenders Portal IT helpdesk for questions such as forgotten passwords, access rights and roles, technical aspects of submission of proposals, etc. European IPR Helpdesk assists you on intellectual property issues. CEN-CENELEC Research Helpdesk and ETSI Research Helpdesk – the European Standards Organisations advise you how to tackle standardisation in your project proposal. The European Charter for Researchers and the Code of Conduct for their recruitment – consult the general principles and requirements specifying the roles, responsibilities and entitlements of researchers, employers and funders of researchers. Partner Search help you find a partner organisation for your proposal.

{
  "budgetYearsColumns": [
    "2026"
  ],
  "budgetTopicActionMap": {
    "114526": [
      {
        "action": "HORIZON-JU-EUROHPC-2026-PQC-06-01 - HORIZON-JU-RIA HORIZON JU Research and Innovation Actions",
        "expectedGrants": 1,
        "minContribution": 9500000,
        "maxContribution": 10000000,
        "budgetYearMap": {
          "2026": "10000000"
        },
        "plannedOpeningDate": "2026-06-02",
        "deadlineModel": "single-stage",
        "deadlineDates": [
          "2026-09-30"
        ]
      }
    ]
  }
}