Rare-earth ions embedded in solid-state substrates can manipulate proximal qubit pairs at standard telecom wavelengths

https://phys.org/news/2026-07-rare-earth-ions-enable-telecom.html

"substrate coupled with silicon nanophotonic cavities... scales quantum networks by aligning qubit optical transitions directly with the light frequencies used in existing fiber-optic telecom infrastructure... precise control over ion-ion interactions offers a viable pathway for executing two-qubit logic operations and establishing entanglement between nodes... scalable quantum internet"