KPI Comm 2a: European technical leadership: quantum information networks
KPI observatory / Quantum Communication
Physical distance over which entanglement is generated, or a data qubit teleported, between quantum processing nodes, with its fidelity and rate; entanglement must be heralded.
Official values: survey results of the Quantum Flagship Strategic Advisory Board, as published. Trajectory and live measure: calculations of this portal, not the assessment of the SAB.
Official values
| Year | Value (definition page 9) | Scorecard (page 4) |
|---|---|---|
| 2021 | 1.3 km | 1.3 km |
| 2022 | 1.3* km | 1.3 km |
| 2023 | 1.3* km | 1.3 km |
| 2024 | 10** km | 10 km |
| Progression per year | x2 | |
| 2030 target | 500 km | 500 km |
Definition: Official KPI values and 2030 targets
Remarks and method
- *: 33 km of fibre on a spool between two buildings 400 m apart.
- **: over 25 km of deployed fibre, with a fidelity of 0.534 and a maximum key rate of 0.48 Hz.
- Scorecard note b: distance for heralded entanglement generation between quantum processing nodes.
Method as stated: Published experiment: Stolk et al., Metropolitan-scale heralded entanglement of solid-state qubits, Science Advances 10(44) (booklet reference Communication 2).
Trajectory (calculated by the portal)
Distance (km)
On pace only if growth compounds
On pace only if growth compounds: recent pace 2021-2024: (10 - 1.3) / 3 = 2.9 a year; needed pace to 2030: (500 - 10) / 6 = 81.7 a year; compound growth: recent +97.4%, needed +91.9% a year. Portal calculation, not the SAB assessment.
At the recent linear pace the value would be about 27.4 in 2030.
The booklet rates each indicator on its own four-level scale (ahead of schedule, on schedule, needs progress, behind schedule); that assessment is not reproduced here.
Definition: Trajectory towards the 2030 target
Live measure of the portal
No automatic measure. Distances of heralded entanglement come from experiments in the literature; the portal does not track them.
Sources
Attribution: Quantum Flagship Strategic Advisory Board, KPI booklet March 2025. The 2024 values were measured in early 2025 through surveys of SAB, QCB, QuIC and QUCATS members and verified and validated by the SAB (booklet page 2).
No reuse licence in the PDF or on qt.eu; the values are quoted as facts with attribution and the booklet is linked, not copied.