Atomic Source of Single Photons in the Telecom Band

Summary

First optical observation of individual Er³⁺ ions in a silicon nanophotonic crystal cavity. Purcell-enhanced emission rate over 650× bulk, enabling identification of dozens of distinct individual ions in a single device. Demonstrates spin-dependent optical transitions via Zeeman splitting. Establishes the platform for subsequent single-ion qubit readout experiments.

Cited In

• rare-earth-ion-qubit