Lodahl develops interfaces between solid-state emitters and light, advancing photonic entanglement, programmable optical interactions and the building blocks of quantum networks and processors.
University of CopenhagenUniversity of Copenhagen / Nature CommunicationsUniversity of Copenhagen / Nature CommunicationsLodahl works on the point where matter can prepare, control and connect individual photons. His collaborations use quantum emitters in nanophotonic structures to generate entanglement and enable optical interactions that photons would not ordinarily provide by themselves. Recent experiments demonstrate temporal fusion of entangled resource states and programmable nonlinear circuits. These are concrete components for photonic computing and networking, rather than claims that a complete large-scale photonic computer has already been assembled.
University of CopenhagenUniversity of Copenhagen / Nature CommunicationsUniversity of Copenhagen / Nature CommunicationsThe work behind the recognition
Work, in context- 2025
Fusing photonic resource states in time
Lodahl coauthored a demonstration that combines entangled resource states generated through a solid-state spin-photon interface. Repeated operation and temporal fusion provide a route to building larger entangled photonic systems from reusable physical resources.
Coauthor and corresponding author of the temporal-fusion paper; the experiment is a team contribution.
Source-supported recordUniversity of Copenhagen / Nature Communications - 2025
Programming interactions between individual photons
Lodahl and collaborators demonstrated circuits combining programmable linear and nonlinear photonic operations. A tunable quantum dot in a nanophotonic waveguide mediates interactions, with experiments including simulations of anharmonic molecular dynamics.
Coauthor of the programmable nonlinear photonics paper; the demonstrated circuits and simulations belong to the full team.
Source-supported recordUniversity of Copenhagen / Nature Communications
Keep in perspective
Component experiments are distinguished from a complete scalable photonic computer.
The evidence map
Both views link each contribution to its sources. Choose a contribution on the map or read them all in the list.
Fusing photonic resource states in time
Temporal fusion of entangled resource states from a quantum emitter
Supports: Authorship, spin-photon resource generation and temporal fusion demonstration.
Published 15 Aug 2025 · Checked 19 Sept 2026Credit & limits: Coauthor and corresponding author of the temporal-fusion paper; the experiment is a team contribution.
Read the full contribution| Contribution | Evidence & what it supports | Credit & limits |
|---|---|---|
| Fusing photonic resource states in time2025 | Primary paperTemporal fusion of entangled resource states from a quantum emitter Authorship, spin-photon resource generation and temporal fusion demonstration. Published 15 Aug 2025 · Checked 19 Sept 2026 | Coauthor and corresponding author of the temporal-fusion paper; the experiment is a team contribution. |
| Programming interactions between individual photons2025 | Primary paperProgrammable nonlinear quantum photonic circuits Authorship, tunable quantum dot, programmable nonlinear operations and molecular-dynamics demonstration. Published 11 Dec 2025 · Checked 19 Sept 2026 | Coauthor of the programmable nonlinear photonics paper; the demonstrated circuits and simulations belong to the full team. |
Follow the evidence
3 sourcesPrimary papers, institutional records and attributed announcements. Each source supports the claims linked above.
- University of CopenhagenInstitutional record
Peter Lodahl
Current professor, Niels Bohr Institute and Copenhagen work base.
Checked 19 Sept 2026 - University of Copenhagen / Nature CommunicationsPrimary paper
Temporal fusion of entangled resource states from a quantum emitter
Authorship, spin-photon resource generation and temporal fusion demonstration.
Published 15 Aug 2025 · Checked 19 Sept 2026 - University of Copenhagen / Nature CommunicationsPrimary paper
Programmable nonlinear quantum photonic circuits
Authorship, tunable quantum dot, programmable nonlinear operations and molecular-dynamics demonstration.
Published 11 Dec 2025 · Checked 19 Sept 2026