Engineering and Technology

Controlling single rare earth ion emission in an electro-optical nanocavity

L. Yang, S. Wang, et al.

This groundbreaking research showcases the direct control of single ion emission using erbium dopants embedded in electro-optically active photonic crystal cavities. Conducted by Likai Yang, Sihao Wang, Mohan Shen, Jiacheng Xie, and Hong X. Tang, the study achieves over 170 Purcell factor, paving the way for new advancements in single-photon sources and efficient spin-photon interfaces.

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Abstract

This paper demonstrates direct control of single ion emission by embedding erbium dopants in an electro-optically active photonic crystal cavity patterned from thin-film lithium niobate. A Purcell factor over 170 enables single ion detection, verified by second-order autocorrelation measurement. Dynamic control of the emission rate is achieved through electro-optic tuning of the resonance frequency, enabling the storage and retrieval of single ion excitation without perturbing emission characteristics. These results offer new possibilities for controllable single-photon sources and efficient spin-photon interfaces.

Publisher

Nature Communications

Published On

Mar 28, 2023

Authors

Likai Yang, Sihao Wang, Mohan Shen, Jiacheng Xie, Hong X. Tang

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