An experimental physicist whose diamond-spin research connects tests of quantum nonlocality with the construction of small networks that distribute and process entanglement.
QuTecharXiv / NatureHanson’s work links fundamental physics with the building blocks of a quantum internet. He coauthored the Delft experiment that tested a Bell inequality while closing major experimental loopholes. His group subsequently demonstrated entanglement across a network with multiple quantum nodes. Both depend on controlling matter-based qubits and connecting them optically, making this research a useful guide to the demanding transition from individual quantum links to coordinated network operations.
QuTecharXiv / NatureThe work behind the recognition
Work, in context- 2015
A loophole-free Bell test
Hanson coauthored the experiment using entangled electron spins separated by 1.3 kilometres to test a Bell inequality. Its event-ready design, efficient readout and rapid measurement choices addressed both the detection and locality loopholes in a single experiment.
Coauthor of the Delft Bell-test experiment with Hensen and the wider collaborating team.
Source-supported recordarXiv / Nature - 2021
A network with multiple quantum nodes
Hanson’s QuTech biography records his group’s demonstration of entanglement in a multi-node quantum network. This extended the laboratory’s work from individual links toward coordinated operations among connected quantum processors.
Research-group contribution documented by QuTech; multi-node entanglement is attributed to the team.
Source-supported recordQuTech
Keep in perspective
His former QuTech scientific-director role is not presented as current. The network demonstration is not described as a deployed general-purpose quantum internet.
The evidence map
Both views link each contribution to its sources. Choose a contribution on the map or read them all in the list.
A loophole-free Bell test
Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km
Supports: Hanson coauthorship and experimental Bell-test conditions.
Published 24 Aug 2015 · Checked 19 Sept 2026Credit & limits: Coauthor of the Delft Bell-test experiment with Hensen and the wider collaborating team.
Read the full contribution| Contribution | Evidence & what it supports | Credit & limits |
|---|---|---|
| A loophole-free Bell test2015 | Primary paperExperimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km Hanson coauthorship and experimental Bell-test conditions. Published 24 Aug 2015 · Checked 19 Sept 2026 | Coauthor of the Delft Bell-test experiment with Hensen and the wider collaborating team. |
| A network with multiple quantum nodes2021 | Institutional recordRonald Hanson Current Delft and QuTech identification; group milestones including a 2021 multi-node network. Checked 19 Sept 2026 | Research-group contribution documented by QuTech; multi-node entanglement is attributed to the team. |
Follow the evidence
2 sourcesPrimary papers, institutional records and attributed announcements. Each source supports the claims linked above.
- QuTechInstitutional record
Ronald Hanson
Current Delft and QuTech identification; group milestones including a 2021 multi-node network.
Checked 19 Sept 2026 - arXiv / NaturePrimary paper
Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km
Hanson coauthorship and experimental Bell-test conditions.
Published 24 Aug 2015 · Checked 19 Sept 2026