Technology hub: Atomic and optical clocks
Technology hub: 6 views
Clocks that count the oscillations of an atomic transition, from microwave to optical frequencies.
- Pillar
- Quantum sensing and metrology
- Related codes
- Axis in the faceted taxonomy
- Function: Time and frequency
- Validation
- Proposed — not yet validated by an expert
- Sources of the definition
4 sources
- Quantum Flagship: Strategic Research and Industry Agenda (SRIA) for quantum technologies, draft for the second phase of the public consultation; chapter 3, Quantum Sensing & Metrology Roadmap Update 2026 (pp. 75 to 100), p. 76 (optical and atomic clocks); p. 87 (compact ion clocks, nuclear clocks) (read 2026-10-29)
- CEN/CENELEC JTC 22 Quantum Technologies: Standardization Roadmap on Quantum Technologies, Release 1.1 (June 2025), JTC22 Q06; chapter 9, Quantum metrology, quantum sensing and quantum imaging, p. 92 (b: quantum clocks); p. 91 (microwave and optical atomic frequency standards) (read 2026-10-29)
- EPO and USPTO: G04F5/14 Apparatus for producing preselected time intervals for use as timing standards using atomic clocks (exact match) (read 2026-10-29)
- OurResearch: T12004 Advanced Frequency and Time Standards (related match) (read 2026-10-29)
29 confirmed items. Including suggestions by rules or AI, not yet reviewed: 44. Suggestions are counted, not listed.
At a glance
- EU and national projects: 20
- Organisations and companies: 7
- Documents and publications: 1
- News and events: 1
Key items: EU and national projects
- QuRIOUS: Quantum Research and Innovation in Optical clocks for Upcoming Scientists
- A next-generation worldwide quantum sensor network with optical atomic clocks
- EQUINOCS: Enhanced quantum interactions for optical clocks
Key items: Organisations and companies
Expert review sheet of the faceted taxonomy (every value, definition and source)
Overview
The technology atlas of Atomic and optical clocks: its value chain, the documented actors by role, facilities, funding, patents and publications, standards and policy measures on one page, each from a source the portal already publishes. Each section says whether these sources document the technology, show an evidence gap or hold nothing about it.
| Section | State in these sources | Records |
|---|---|---|
| Value chain | Documented in these sources | 4 |
| Actors by role | Documented in these sources | 11 |
| Facilities and access | No evidence found in these sources | 0 |
| Funding | Documented in these sources | 4 |
| Patents and publications | Documented in these sources | 2 |
| Standards | No evidence found in these sources | 0 |
| Policy measures | Documented in these sources | 4 |
| Evidence gaps | Evidence gap in these sources | 1 |
- Documented in these sources: at least one record of these sources is about this technology.
- Evidence gap in these sources: the parts tree names a stage, but no documented European actor is linked to it here. Evidence gap in these sources, not a finding of dependency.
- No evidence found in these sources: No evidence found in these sources. It means only that these sources hold nothing on it.
Public layer: structure and documented actors only. Actor roles come from typed, dated relationships and are never inferred from shared projects or patents. Supplier assessments of the restricted dependency map are not shown on this public page. No technology readiness level is given.
External context: EPO Observatory: quantum technologies · EPO Deep Tech Finder
Value chain
The stages of this technology in the parts tree, a reference structure from review articles and EU law, with the European companies whose own product page names a product line for the stage or a part under it (the curated supplier directory).
Documented in these sources: 4 stages; 1 stage with an evidence gap.
Quantum sensors and atomic clocks: Alkali vapour cell sensors
| Stage | Level | Part of | Materials | Documented European actors | State |
|---|---|---|---|---|---|
| Alkali vapour cell sensors | Subsystem | Quantum sensors and atomic clocks | Cerca Magnetics; MAG4Health; QSENSATO; Safran Navigation & Timing | Documented in these sources | |
| Alkali vapour cells | Component | Alkali vapour cell sensors | QSENSATO | Documented in these sources | |
| Chip-scale atomic clock physics packages | Component | Alkali vapour cell sensors | Evidence gap in these sources Evidence gap in these sources, not a finding of dependency. | ||
| Optically pumped magnetometer sensor heads | Component | Alkali vapour cell sensors | Cerca Magnetics; MAG4Health | Documented in these sources |
Parts tree of Quantum sensors and atomic clocks: Alkali vapour cell sensors · Suppliers of Quantum sensors and atomic clocks: Alkali vapour cell sensors in the supplier directory
Supply-chain parts and critical raw materials
From the parts tree: a reference structure of what each technology needs, down to materials, compiled from public review articles and EU law. It is not a supplier assessment.
Critical raw materials as listed in Annex II of the Critical Raw Materials Act (Regulation (EU) 2024/1252).
Actors by role
Organisations with a documented relationship to this technology: a product line on the company’s own product page, the host or programme the infrastructure catalogue names for a facility, or the operator of an access route. Each row names its source and the date it was read. Roles are never inferred from taking part in the same project or patent.
| Role | Actors | State | Where |
|---|---|---|---|
| Manufacturer or supplier of a part | 4 | Documented in these sources | 4 organisations in the table below. |
| Host, operator or access provider | 0 | No evidence found in these sources | 0 organisations in the table below. |
| Funder or programme | 0 | No evidence found in these sources | 0 organisations in the table below. |
| Researcher or developer | 7 | Documented in these sources | Organisations confirmed under this technology by the classification; listed in “Organisations and companies” below. Participants in EU-funded projects are counted per pillar in technology intelligence. |
| User | 0 | No evidence found in these sources | These sources record no user of this technology. |
| Organisation | Role | Country | Relationship | Stages | Source and date read |
|---|---|---|---|---|---|
| Cerca Magnetics | Manufacturer or supplier of a part | GB | Cerca OPM-MEG System (optically pumped magnetometer brain-imaging system) | Optically pumped magnetometer sensor heads | Source (read 2026-10-26) |
| MAG4Health | Manufacturer or supplier of a part | FR | OPM-MEG System (helium-4 optically pumped magnetometer brain-imaging system) | Optically pumped magnetometer sensor heads | Source (read 2026-10-26) |
| QSENSATO | Manufacturer or supplier of a part | IT | All-glass vapor cells and atomic-photonic chips (custom laser-written alkali vapour cells for optically pumped magnetometers, RF field sensors and atomic clocks) | Alkali vapour cells | Source (read 2026-10-30) |
| Safran Navigation & Timing | Manufacturer or supplier of a part | CH | Rubidium Clocks and Oscillators (MIRA, mRO-50, LPFRS) (rubidium vapour-cell atomic clocks and oscillators) | Alkali vapour cell sensors | Source (read 2026-10-26) Partly verified: the page does not state the quantum use. |
Organisations and companies
7 confirmed items. Including suggestions by rules or AI, not yet reviewed and not listed here: 17.
- Istituto Nazionale di Ricerca Metrologica
- The University of Birmingham
- Physikalisch-Technische Bundesanstalt
- Uniwersytet Mikolaja Kopernika
- Politecnico di Torino
See all 7: Organisations and companies · Companies of Atomic and optical clocks in the investor screener
Facilities and access
Facilities of this technology in the infrastructure catalogue, the furthest milestone the deployment tracker evidences for each, and the current access routes that open them.
No evidence found in these sources. The infrastructure catalogue lists no facility for this technology.
Funding
Upcoming work-programme topics in this technology (the EU programme pipeline) and the funding instruments whose stated quantum relevance names it. The awards of its EU-funded projects and the announced funding rounds follow below.
Upcoming topics in the programme pipeline
No evidence found in these sources. No upcoming topic of the pipeline (read 2026-11-01) names this technology.
Pipeline topics of Atomic and optical clocks
Funding instruments
| Instrument | Programme | Stated quantum relevance | Why it is shown |
|---|---|---|---|
| EIC Accelerator | Horizon Europe: European Innovation Council | The EIC Work Programme 2026 states that the Accelerator Open call remains available to start-ups and SMEs, including for quantum technologies, with specific safeguards on investments in quantum. | Names its pillar, Quantum sensing and metrology |
| EIC STEP Scale Up | Horizon Europe: European Innovation Council, Strategic Technologies for Europe Platform (STEP) | Quantum technologies are among the digital and deep-tech priority areas, and the EIC Work Programme 2026 says support for quantum start-ups will be pursued in particular through this call. | Names its pillar, Quantum sensing and metrology |
| EuroHPC JU quantum technology calls (Quantum Flagship) | Horizon Europe: Quantum Flagship, implemented by the EuroHPC JU | Since Council Regulation (EU) 2026/150 entered into force on 20 January 2026, the JU implements the Union's quantum technology agenda, including the Quantum Flagship funded through Horizon Europe, and its 2026 calls cover quantum computing platforms, QKD, testing infrastructure, pilot lines, sensing, machine learning and standards. | Names its pillar, Quantum sensing and metrology |
| QuantERA joint transnational calls | QuantERA: network of national research funders with European Commission co-funding | QuantERA is a network of research funders for quantum technologies, and Call 2025 covered quantum phenomena and resources and applied quantum science across communication, computing, simulation, sensing and metrology. | Names its pillar, Quantum sensing and metrology |
6 more instruments are open to any field of research and are not listed here.
EU and national projects
20 confirmed items. Including suggestions by rules or AI, not yet reviewed and not listed here: 22.
| Measure | Total | Projects with an amount | Projects without one |
|---|---|---|---|
| EU contribution (maximum grant agreed) | EUR 4,642,371.72 | 1 | 0 |
| Measure | Total | Projects with an amount | Projects without one |
|---|---|---|---|
| approved FWF funding | EUR 806,886 | 3 | 0 |
| ANR aid allocated | EUR 693,398.39 | 2 | 0 |
| award value (Gateway to Research) | GBP 1,012,413 | 1 | 0 |
| total eligible expenditure | EUR 706,982.91 | 1 | 0 |
| award value (Gateway to Research) | 0 | 0 | 3 |
| funded amount | 0 | 0 | 8 |
Each project counts once. A total adds the amount each source states for its projects within one measure and one currency only: EU contributions, national awards and other measures are never added together. Total cost includes the award and is shown separately. A country filter keeps whole projects with a participant in the country, so its total is not the country's share. Programme envelopes, partner shares, co-funding and payments are separate layers and are never added to awards; payments are not published by the sources used. Outputs are linked only through an explicit project or grant identifier or reviewed documentary evidence, never by name alone; only a reviewed document can show a demonstrated contribution. CORDIS and Funding & Tenders amounts are one measure, the EU contribution (maximum grant agreed in the grant agreement, not payments). Country codes EL and UK are read as GR (Greece) and GB (United Kingdom). National and regional rows whose title names no quantum technology are left out unless asked for. EU and national totals are shown apart and never added.
Includes projects from the ANR open data: ANR, data.gouv.fr, ODbL 1.0; those rows are shared alike under the Open Database Licence.
1 confirmed project page has no award record and is not in the totals.
- QuRIOUS: Quantum Research and Innovation in Optical clocks for Upcoming Scientists
- A next-generation worldwide quantum sensor network with optical atomic clocks
- EQUINOCS: Enhanced quantum interactions for optical clocks
- Continuous Superradiant Lasing for Active Optical Clocks
- Enhanced quantum interaction for optical clocks
Patents and publications
Patent counts come from EPO Open Patent Services in technology intelligence, by CPC group, and per EPO quantum concept in the technology intelligence reports; publications by OpenAlex topic. The patent series of this node and its documents follow below.
Documented in these sources: 1 indicator page of this technology.
OpenAlex topics
Patent landscape of Quantum sensing and metrology in technology intelligence · All technology intelligence reports
Patents
No patent series for this node. Its CPC groups (G04F 5/14) are shared with other technologies, so no series isolates it.
Documents and publications
1 confirmed item.
Standards
Standards, specifications, committees and roadmaps of the standards tracker in the scope of this technology, each with its body and status.
No evidence found in these sources. The standards tracker holds no item in the scope of this technology.
9 tracked items are about quantum technologies in general.
Policy measures
Actions of the Quantum Europe Strategy (COM(2025) 363) that name this technology or its pillar, or that link one of its facilities, with their status in the strategy tracker.
Documented in these sources: 4 actions.
| Action | Status | Target | Why it is shown | Where in the strategy |
|---|---|---|---|---|
| Deploy a distributed network of quantum gravimeters | In progress (evidence) | 2026 onwards | Names its pillar, Quantum sensing and metrology | Section 2.2.3, Quantum gravimeters (p. 10) and action list (p. 11); Appendix, Area 2 (p. 23) |
| Publish a Quantum Sensing Roadmap | Announced | 2026 | Names its pillar, Quantum sensing and metrology | Section 2.2.3, text and action list (p. 11); Appendix, Area 2 (p. 23) |
| Establish a European Q-MRI Pilot Infrastructure | Announced | 2025 onwards | Names its pillar, Quantum sensing and metrology | Section 2.2.3, Quantum Magnetic Resonance Imaging (p. 10) and action list (p. 11); Appendix, Area 2 (p. 23) |
| Develop a quantum sensing space and defence technology roadmap | Announced | 2026 | Names its pillar, Quantum sensing and metrology | Section 2.4, Quantum technologies for security and defence and action list (p. 17); Appendix, Area 4 (p. 23) |
Evidence gaps
Stages of the value chain for which these sources link no documented European actor. Evidence gap in these sources, not a finding of dependency. A company may well supply the stage without a product page the directory has read; a missing record is never proof of a strategic dependency.
Evidence gap in these sources: 1 stage. Evidence gap in these sources, not a finding of dependency.
| Stage | Level | Part of | Platform | Reading |
|---|---|---|---|---|
| Chip-scale atomic clock physics packages | Component | Alkali vapour cell sensors | Quantum sensors and atomic clocks: Alkali vapour cell sensors | Evidence gap in these sources, not a finding of dependency. |
Know a European supplier for one of these stages? Tell the editors
News and events
1 confirmed item. Including suggestions by rules or AI, not yet reviewed and not listed here: 2.
JRC and EU analysis
Reports and pages of the European Commission’s Joint Research Centre (JRC). Identifiers are those of the JRC Publications Repository; the portal does not reproduce their data.
- JRC Quantum Communication and Sensing Laboratory (EuroQCI testing and evaluation laboratory)
The JRC has been selected to host the EuroQCI testing and evaluation laboratory, building on the Digital Europe project NOSTRADAMUS (launched January 2024). The JRC describes its role as generating reproducible technical evidence with a view to future certification, not as guaranteeing that a product is free of vulnerabilities.
- EU role in the global quantum race
Policy brief on the global quantum technology landscape: public and private funding, innovation potential and market perspective.
- Future Directions for Quantum Technology in Europe
Background analysis for the Quantum Europe Strategy: companies, patents, publications, supply chains, public funding and venture capital, by sector (communication including QKD, computing including simulation, sensing, and post-quantum cryptography).
- JRC Ispra links up with atomic clock and the Quantum Backbone (JRC news, 10 June 2025)
The JRC site in Ispra was connected to the Italian Quantum Backbone, part of EuroQCI, and to a time signal from INRiM's caesium-fountain clock.
- (Dis)Entangling the Future: horizon scanning for emerging technologies and breakthrough innovations in the field of quantum technologies
Horizon scanning of emerging quantum technologies and breakthrough innovations (FUTURINNOV project).
- Cold atom interferometry for inertial navigation sensors
Technology assessment of gyroscopes and accelerometers based on cold atom interferometry for space and defence (EUR 30492 EN).
- Cold atom interferometry sensors: physics and technologies
Physical principles of cold atom interferometry and how they are used in inertial and gravity sensors (EUR 30289 EN).
- Patent analysis of selected quantum technologies
Patent applications in the EPO Global Patent Index for quantum computing, quantum key distribution, quantum entanglement and cold atom interferometry, with a discussion of method (EUR 29614 EN).
Further reading
- Understanding Quantum Technologies 2025 (Olivier Ezratty, 8th edition, version 8.1 of 30 October 2025, arXiv:2111.15352 (v6), doi:10.48550/arXiv.2111.15352, CC BY-NC-ND 4.0)See Part 4: Communications and sensing
- Understanding Quantum Technologies 2026 (Olivier Ezratty, 9th edition, version 9.0 of 17 October 2026 (latest edition))See Part 4: Communications and sensing
Olivier Ezratty, Understanding Quantum Technologies (CC BY-NC-ND 4.0). Links only; no text of the book is reproduced on this portal.
All technologies · How items are classified · Published classification method · Draft SRIA 2026 chapter: Sensing and metrology