The indicator pages of Quantum Europe: each is computed by the portal from open data and states its sources, method and limits. The date is that of the data the page currently shows. Reports published by others are listed under Reports and analysis.
Publications, patent families and EU funding per technology pillar in the structure of the JRC report on quantum technology in Europe, with completeness and the differences from the JRC method.
Source: OpenAlex, EPO Open Patent Services, CORDIS and EU Funding & Tenders, ROR and Wikidata; JRC reports for comparison.
EU maximum contribution to quantum projects year by year, by pillar, hardware platform, supply-chain segment, programme, country and kind of organisation.
Every figure these pages publish has a versioned definition (numerator, denominator, period, counting rule, source, coverage and approval) in How the portal defines its indicators.