# TUM team reports photonic waveguides lift desired photon share

_Tuesday, August 18, 2026 at 6:00 PM EDT · Science, Infrastructure · Latest · Tier 2 — Notable_

![TUM team reports photonic waveguides lift desired photon share — Primary](https://scx2.b-cdn.net/gfx/news/2026/tum-develops-single-ph.jpg)

Researchers at the Technical University of Munich and the Munich Center for Quantum Science and Technology reported a photonic-crystal-waveguide method for single-photon sources used in quantum-network research. Rather than amplifying a chosen frequency with a resonator, the waveguides suppress unwanted frequencies. In initial erbium experiments, the share of desired photons in emitted light rose from about 23% to around 72%. The work was published in Nature Communications.

## Sources

- [Phys.org - latest science and technology news stories](https://phys.org/news/2026-08-photonic-crystal-method-photon-sources.html)

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