The five main hardware platforms for quantum computers, compared on what EU-funded research and innovation shows: projects and funding over time, the companies and countries taking part, research output, and how much of each platform's parts and materials EU-funded projects cover. The figures describe EU-funded activity, not the merit of a platform.
Superconducting circuits
EU-funded projects
48
EU contribution
€136m
Companies in matching projects
22
Publications linked (OpenAIRE)
1,064
Companies in the most matching projects
Bluefors OY (FI)
Eurice European Research and Project Office GMBH (DE)
Bars are scaled within each row; the highest value in a row is in bold.
Quantum computing platforms: figures from EU-funded projects
Figure
Superconducting circuits
Trapped ions
Neutral atoms
Photonic qubits
Spins and semiconductors
EU-funded projects
48
24
82
92
108 (highest)
EU contribution
€136m
€57.4m
€189m
€201m
€203m (highest)
Growth in projects between the two periods
×2.0 (highest)
×0.7
×1.4
×1.6
×1.5
Companies in matching projects
22
8
17
36 (highest)
25
of which SMEs
17
5
12
26 (highest)
17
Countries taking part
19
11
19
22 (highest)
21
Publications linked (OpenAIRE)
1,064
611
1,911 (highest)
1,681
1,521
Publications per EUR 1 million
7.8
10.6 (highest)
10.3
8.5
7.8
Parts and materials in the tree
28 (highest)
21
18
19
21
Parts no EU-funded project title names
22 (highest)
19
17
11
14
Critical raw materials among them
7
3
0
4
8 (highest)
How the figures are made
Projects, EU contribution and growth: CORDIS projects whose title names the platform (keyword matching, as on the technology map); a project naming two platforms is split between them.
Growth compares projects starting 2021–2026 with 2015–2020; the last year is left out because its projects are still being signed.
Companies, SMEs and countries: organisations in the projects matching the platform in the parts-and-materials tree, whose keywords differ slightly from the title matching above.
Publications: OpenAIRE Graph results linked to the platform's projects, for the projects checked so far; per EUR 1 million only where enough projects are checked.
Parts and materials: the source-verified tree; a part counts as a gap when no EU-funded project title names it, which does not mean nobody in Europe works on it.
Patents are not counted per platform: the European Patent Office data (EPO OPS) is connected, but it is classified by CPC class and EPO quantum concept, not by platform. Patent families are shown by applicant country and in the technology intelligence reports.